diff --git a/packages/frontend-2/components/viewer/filters/Panel.vue b/packages/frontend-2/components/viewer/filters/Panel.vue
index f18618e30..c4410b425 100644
--- a/packages/frontend-2/components/viewer/filters/Panel.vue
+++ b/packages/frontend-2/components/viewer/filters/Panel.vue
@@ -86,11 +86,7 @@
 </template>
 
 <script setup lang="ts">
-import {
-  useInjectedViewerInterfaceState,
-  useInjectedViewer,
-  useInjectedViewerState
-} from '~~/lib/viewer/composables/setup'
+import { useInjectedViewerInterfaceState } from '~~/lib/viewer/composables/setup'
 import type { PropertySelectOption } from '~/lib/viewer/helpers/filters/types'
 import { FilterType } from '~/lib/viewer/helpers/filters/types'
 import { useMixpanel } from '~~/lib/core/composables/mp'
@@ -111,9 +107,6 @@ const {
   setFilterLogic
 } = useFilterUtilities()
 
-const dataStore = useFilteringDataStore()
-const { instance } = useInjectedViewer()
-const { resourceItems } = useInjectedViewerState().resources.response
 const { currentFilterLogic } = useFilteringDataStore()
 const { filteredObjectsCount } = useFilteredObjectsCount()
 const mp = useMixpanel()
@@ -128,6 +121,10 @@ const filtersContainerRef = ref<HTMLElement>()
 const shouldScrollToNewFilter = ref(false)
 
 const propertySelectOptions = computed((): PropertySelectOption[] => {
+  if (!showPropertySelection.value) {
+    return []
+  }
+
   const existingFilterKeys = new Set(
     propertyFilters.value.map((f) => f.filter?.key).filter(Boolean)
   )
@@ -137,28 +134,34 @@ const propertySelectOptions = computed((): PropertySelectOption[] => {
   const allOptions: PropertySelectOption[] = relevantFilters
     .filter((filter) => !existingFilterKeys.has(filter.key))
     .map((filter) => {
-      const pathParts = filter.key.split('.')
-      const propertyName = pathParts[pathParts.length - 1]
-      const parentPath = pathParts.slice(0, -1).join('.')
+      const lastDotIndex = filter.key.lastIndexOf('.')
+      const propertyName =
+        lastDotIndex === -1 ? filter.key : filter.key.slice(lastDotIndex + 1)
+      const parentPath = lastDotIndex === -1 ? '' : filter.key.slice(0, lastDotIndex)
 
       return {
         value: filter.key,
         label: propertyName,
         parentPath,
         type: filter.type === 'number' ? FilterType.Numeric : FilterType.String,
-        hasParent: parentPath.length > 0
+        hasParent: lastDotIndex !== -1
       }
     })
 
+  // Use a more efficient sorting approach
   const sortedOptions = allOptions.sort((a, b) => {
-    if (!a.hasParent && b.hasParent) return -1
-    if (a.hasParent && !b.hasParent) return 1
+    // First sort by whether they have parents (no-parent items first)
+    if (a.hasParent !== b.hasParent) {
+      return a.hasParent ? 1 : -1
+    }
 
+    // If both have parents, sort by parent path first
     if (a.hasParent && b.hasParent) {
       const parentComparison = a.parentPath.localeCompare(b.parentPath)
       if (parentComparison !== 0) return parentComparison
     }
 
+    // Finally sort by label
     return a.label.localeCompare(b.label)
   })
 
@@ -244,26 +247,6 @@ onKeyStroke('Escape', () => {
   }
 })
 
-// Populate data store on mount to avoid delay when clicking plus button
-onMounted(async () => {
-  if (dataStore.dataSources.value.length === 0 && resourceItems.value.length > 0) {
-    const tree = instance.getWorldTree()
-    if (tree) {
-      const availableResources = resourceItems.value.filter((item) => {
-        const nodes = tree.findId(item.objectId)
-        return nodes && nodes.length > 0
-      })
-
-      if (availableResources.length > 0) {
-        const resources = availableResources.map((item) => ({
-          resourceUrl: item.objectId
-        }))
-        await dataStore.populateDataStore(instance, resources)
-      }
-    }
-  }
-})
-
 // Watch for new filters being added and scroll when needed
 watch(
   () => propertyFilters.value.length,
diff --git a/packages/frontend-2/components/viewer/filters/property-selection/Panel.vue b/packages/frontend-2/components/viewer/filters/property-selection/Panel.vue
index 72598dd21..b462c6434 100644
--- a/packages/frontend-2/components/viewer/filters/property-selection/Panel.vue
+++ b/packages/frontend-2/components/viewer/filters/property-selection/Panel.vue
@@ -79,19 +79,35 @@ const updateDebouncedSearch = useDebounceFn((query: string) => {
   debouncedSearchQuery.value = query
 }, 200)
 
+// Pre-compute lowercase versions for efficient searching
+const optionsWithLowercase = computed(() => {
+  return props.options.map((option) => ({
+    ...option,
+    _searchLabel: option.label.toLowerCase(),
+    _searchValue: option.value.toLowerCase(),
+    _searchParentPath: option.parentPath.toLowerCase(),
+    _searchType: option.type.toLowerCase()
+  }))
+})
+
 const filteredOptions = computed(() => {
   if (!debouncedSearchQuery.value.trim()) {
     return props.options
   }
 
   const searchTerm = debouncedSearchQuery.value.toLowerCase().trim()
-  return props.options.filter(
-    (option) =>
-      option.label.toLowerCase().includes(searchTerm) ||
-      option.value.toLowerCase().includes(searchTerm) ||
-      option.parentPath.toLowerCase().includes(searchTerm) ||
-      option.type.toLowerCase().includes(searchTerm)
-  )
+  return optionsWithLowercase.value
+    .filter(
+      (option) =>
+        option._searchLabel.includes(searchTerm) ||
+        option._searchValue.includes(searchTerm) ||
+        option._searchParentPath.includes(searchTerm) ||
+        option._searchType.includes(searchTerm)
+    )
+    .map(
+      ({ _searchLabel, _searchValue, _searchParentPath, _searchType, ...option }) =>
+        option
+    )
 })
 
 const listItems = computed((): PropertySelectionListItem[] => {
@@ -105,8 +121,10 @@ const listItems = computed((): PropertySelectionListItem[] => {
     return searchResults
   }
 
+  // Create a map for O(1) lookup instead of O(n) find operations
+  const optionsMap = new Map(props.options.map((opt) => [opt.value, opt]))
   const availablePopular = FILTERS_POPULAR_PROPERTIES.map((filterKey) =>
-    props.options.find((opt) => opt.value === filterKey)
+    optionsMap.get(filterKey)
   )
     .filter(Boolean)
     .slice(0, 6) // Show max 6 popular filters
diff --git a/packages/frontend-2/lib/viewer/composables/filtering/dataStore.ts b/packages/frontend-2/lib/viewer/composables/filtering/dataStore.ts
index 3df24fa3f..508a22861 100644
--- a/packages/frontend-2/lib/viewer/composables/filtering/dataStore.ts
+++ b/packages/frontend-2/lib/viewer/composables/filtering/dataStore.ts
@@ -1,5 +1,5 @@
 import type { SpeckleObject, TreeNode, Viewer } from '@speckle/viewer'
-import { uniq, flatten, isEmpty, compact } from 'lodash-es'
+import { uniq, flatten, compact } from 'lodash-es'
 import {
   FilterLogic,
   NumericFilterCondition,
@@ -21,39 +21,6 @@ export function createViewerFilteringDataStore() {
   const currentFilterLogic = ref<FilterLogic>(FilterLogic.All)
   const dataSlices: Ref<DataSlice[]> = ref([])
 
-  const propertyExtractionCache = new Map<Record<string, unknown>, PropertyInfoBase[]>()
-
-  const extractNestedProperties = (
-    obj: Record<string, unknown>
-  ): PropertyInfoBase[] => {
-    if (propertyExtractionCache.has(obj)) {
-      return propertyExtractionCache.get(obj)!
-    }
-
-    const properties: PropertyInfoBase[] = []
-
-    function traverse(current: Record<string, unknown>, path: string[] = []) {
-      for (const [key, value] of Object.entries(current)) {
-        const currentPath = [...path, key]
-        const concatenatedPath = currentPath.join('.')
-
-        if (value !== null && typeof value === 'object' && !Array.isArray(value)) {
-          traverse(value as Record<string, unknown>, currentPath)
-        } else {
-          properties.push({
-            concatenatedPath,
-            value,
-            type: typeof value
-          } as PropertyInfoBase)
-        }
-      }
-    }
-
-    traverse(obj)
-    propertyExtractionCache.set(obj, properties)
-    return properties
-  }
-
   const populateDataStore = async (viewer: Viewer, resources: ResourceInfo[]) => {
     const tree = viewer.getWorldTree()
     if (!tree) return
@@ -67,36 +34,86 @@ export function createViewerFilteringDataStore() {
 
       const objectMap: Record<string, SpeckleObject> = {}
       const propertyMap: Record<string, PropertyInfoBase> = {}
-      const propertyIndexCache: Record<string, Record<string, string[]>> = {}
+      // Map from objectId to its property values for efficient filtering
+      const objectProperties: Record<string, Record<string, unknown>> = {}
 
       await tree.walkAsync((node: TreeNode) => {
         if (
           node.model.atomic &&
-          node.model.raw.id &&
-          node.model.raw.id.length === 32 &&
+          node.model.id &&
+          node.model.id.length === 32 &&
           !node.model.raw.speckle_type?.includes('Proxy') &&
           node.model.raw.properties?.builtInCategory !== 'OST_Levels'
         ) {
-          const objectId = node.model.raw.id
+          const objectId = node.model.id
           objectMap[objectId] = node.model.raw as SpeckleObject
 
-          const props = extractNestedProperties(node.model.raw)
-          for (const p of props) {
-            propertyMap[p.concatenatedPath] = p
+          // Extract only commonly used properties - avoid expensive full traversal
+          const objProps: Record<string, unknown> = {}
 
-            const propertyKey = p.concatenatedPath
-            const value = String(p.value)
-
-            if (!propertyIndexCache[propertyKey]) {
-              propertyIndexCache[propertyKey] = {}
+          // Direct properties
+          for (const [key, value] of Object.entries(node.model.raw)) {
+            if (typeof value !== 'object' || value === null || Array.isArray(value)) {
+              const path = key
+              objProps[path] = value
+              if (!propertyMap[path]) {
+                propertyMap[path] = {
+                  concatenatedPath: path,
+                  value,
+                  type: typeof value
+                } as PropertyInfoBase
+              }
             }
-
-            if (!propertyIndexCache[propertyKey][value]) {
-              propertyIndexCache[propertyKey][value] = []
-            }
-
-            propertyIndexCache[propertyKey][value].push(objectId)
           }
+
+          // Properties.* (one level)
+          const props = node.model.raw.properties
+          if (props && typeof props === 'object' && !Array.isArray(props)) {
+            for (const [key, value] of Object.entries(
+              props as Record<string, unknown>
+            )) {
+              if (typeof value !== 'object' || value === null || Array.isArray(value)) {
+                const path = `properties.${key}`
+                objProps[path] = value
+                if (!propertyMap[path]) {
+                  propertyMap[path] = {
+                    concatenatedPath: path,
+                    value,
+                    type: typeof value
+                  } as PropertyInfoBase
+                }
+              }
+            }
+          }
+
+          // Parameters.*.value (Revit objects)
+          const params = node.model.raw.parameters
+          if (params && typeof params === 'object' && !Array.isArray(params)) {
+            for (const [key, paramObj] of Object.entries(
+              params as Record<string, unknown>
+            )) {
+              if (
+                paramObj &&
+                typeof paramObj === 'object' &&
+                !Array.isArray(paramObj)
+              ) {
+                const param = paramObj as Record<string, unknown>
+                if ('value' in param) {
+                  const path = `parameters.${key}.value`
+                  objProps[path] = param.value
+                  if (!propertyMap[path]) {
+                    propertyMap[path] = {
+                      concatenatedPath: path,
+                      value: param.value,
+                      type: typeof param.value
+                    } as PropertyInfoBase
+                  }
+                }
+              }
+            }
+          }
+
+          objectProperties[objectId] = objProps
         }
         return true
       }, subnode)
@@ -109,54 +126,58 @@ export function createViewerFilteringDataStore() {
         rootObject: rootObject ? markRaw(rootObject) : null,
         objectMap: markRaw(objectMap),
         propertyMap,
-        _propertyIndexCache: propertyIndexCache
+        objectProperties
       }
     }
   }
 
-  const buildPropertyIndex = (
-    dataSource: DataSource,
-    propertyKey: string
-  ): Record<string, string[]> => {
-    if (dataSource._propertyIndexCache && dataSource._propertyIndexCache[propertyKey]) {
-      return dataSource._propertyIndexCache[propertyKey]
-    }
-    return {}
-  }
-
   const queryObjects = (criteria: QueryCriteria): string[] => {
     const matchingIds: string[] = []
-
     const PRECISION = 4 // matches 0.0001 step
 
     for (const dataSource of dataSources.value) {
-      const propertyIndex = buildPropertyIndex(dataSource, criteria.propertyKey)
-
-      if (!propertyIndex || isEmpty(propertyIndex)) {
+      // Check if property exists in propertyMap
+      const propertyInfo = dataSource.propertyMap[criteria.propertyKey]
+      if (!propertyInfo) {
         continue
       }
 
       if (criteria.condition === ExistenceFilterCondition.IsSet) {
-        matchingIds.push(...flatten(Object.values(propertyIndex)))
-      } else if (criteria.condition === ExistenceFilterCondition.IsNotSet) {
-        const objectsWithProperty = new Set<string>(
-          flatten(Object.values(propertyIndex))
-        )
-
-        for (const [objectId] of Object.entries(dataSource.objectMap)) {
-          if (!objectsWithProperty.has(objectId)) {
+        // Find all objects that have this property - use pre-computed objectProperties
+        for (const [objectId, objProps] of Object.entries(
+          dataSource.objectProperties
+        )) {
+          const hasProperty = criteria.propertyKey in objProps
+          if (hasProperty) {
             matchingIds.push(objectId)
           }
         }
-      } else if (criteria.minValue !== undefined || criteria.maxValue !== undefined) {
-        const minValue = criteria.minValue ?? -Infinity
-        const maxValue = criteria.maxValue ?? Infinity
+      } else if (criteria.condition === ExistenceFilterCondition.IsNotSet) {
+        // Find all objects that don't have this property
+        for (const [objectId, objProps] of Object.entries(
+          dataSource.objectProperties
+        )) {
+          const hasProperty = criteria.propertyKey in objProps
+          if (!hasProperty) {
+            matchingIds.push(objectId)
+          }
+        }
+      } else {
+        // For value-based filtering, check each object
+        for (const [objectId, objProps] of Object.entries(
+          dataSource.objectProperties
+        )) {
+          const value = objProps[criteria.propertyKey]
+          if (value === undefined) continue
+          let shouldInclude = false
 
-        for (const [value, objectIds] of Object.entries(propertyIndex)) {
-          const numericValue = Number(value)
-          if (!isNaN(numericValue)) {
-            // Only round for display purposes, not for filtering logic
-            let shouldInclude = false
+          if (criteria.minValue !== undefined || criteria.maxValue !== undefined) {
+            // Numeric filtering
+            const numericValue = Number(value)
+            if (isNaN(numericValue)) continue
+
+            const minValue = criteria.minValue ?? -Infinity
+            const maxValue = criteria.maxValue ?? Infinity
 
             switch (criteria.condition) {
               case NumericFilterCondition.IsBetween:
@@ -169,13 +190,11 @@ export function createViewerFilteringDataStore() {
                 shouldInclude = numericValue < maxValue
                 break
               case NumericFilterCondition.IsEqualTo: {
-                // For equality, use a small tolerance to account for floating-point precision
                 const tolerance = Math.pow(10, -PRECISION)
                 shouldInclude = Math.abs(numericValue - minValue) <= tolerance
                 break
               }
               case NumericFilterCondition.IsNotEqualTo: {
-                // For inequality, use a small tolerance to account for floating-point precision
                 const tolerance = Math.pow(10, -PRECISION)
                 shouldInclude = Math.abs(numericValue - minValue) > tolerance
                 break
@@ -183,28 +202,16 @@ export function createViewerFilteringDataStore() {
               default:
                 shouldInclude = numericValue >= minValue && numericValue <= maxValue
             }
+          } else if (criteria.condition === StringFilterCondition.Is) {
+            // String filtering - exact match
+            shouldInclude = criteria.values.includes(String(value))
+          } else if (criteria.condition === StringFilterCondition.IsNot) {
+            // String filtering - exclude values
+            shouldInclude = !criteria.values.includes(String(value))
+          }
 
-            if (shouldInclude) {
-              matchingIds.push(...objectIds)
-            }
-          }
-        }
-      } else if (criteria.condition === StringFilterCondition.Is) {
-        for (const value of criteria.values) {
-          const objectIds = propertyIndex[value]
-          if (objectIds) {
-            matchingIds.push(...objectIds)
-          }
-        }
-      } else if (criteria.condition === StringFilterCondition.IsNot) {
-        if (criteria.values.length === 0) {
-          // Return empty array - nothing matches "is not" with no exclusions
-        } else {
-          const excludeValues = new Set(criteria.values)
-          for (const [value, objectIds] of Object.entries(propertyIndex)) {
-            if (!excludeValues.has(value)) {
-              matchingIds.push(...objectIds)
-            }
+          if (shouldInclude) {
+            matchingIds.push(objectId)
           }
         }
       }
@@ -272,17 +279,18 @@ export function createViewerFilteringDataStore() {
             .map((slice) => slice.objectIds)
         )
       )
-      return uniq(validObjectIds)
+      const result = uniq(validObjectIds)
+      return result
     } else {
       const lastSlice = dataSlices.value[dataSlices.value.length - 1]
-      return lastSlice?.intersectedObjectIds || []
+      const result = lastSlice?.intersectedObjectIds || []
+      return result
     }
   }
 
   const clearDataOnRouteLeave = () => {
     dataSourcesMap.value = {}
     dataSlices.value = []
-    propertyExtractionCache.clear()
   }
 
   const setFilterLogic = (logic: FilterLogic) => {
@@ -301,8 +309,7 @@ export function createViewerFilteringDataStore() {
     setFilterLogic,
     currentFilterLogic,
     dataSlices,
-    dataSources,
-    buildPropertyIndex
+    dataSources
   }
 }
 
diff --git a/packages/frontend-2/lib/viewer/composables/filtering/filtering.ts b/packages/frontend-2/lib/viewer/composables/filtering/filtering.ts
index 419a6b1f7..3dd995f78 100644
--- a/packages/frontend-2/lib/viewer/composables/filtering/filtering.ts
+++ b/packages/frontend-2/lib/viewer/composables/filtering/filtering.ts
@@ -83,18 +83,24 @@ export function useFilterUtilities(
   }
 
   /**
-   * Gets ALL values for a property from pre-computed indices (used for filtering logic)
+   * Gets ALL values for a property using pre-computed data (used for filtering logic)
    */
   const getAllPropertyValues = (propertyKey: string): string[] => {
     const allValues: string[] = []
 
     for (const dataSource of dataStore.dataSources.value) {
-      if (
-        dataSource._propertyIndexCache &&
-        dataSource._propertyIndexCache[propertyKey]
-      ) {
-        const propertyIndex = dataSource._propertyIndexCache[propertyKey]
-        allValues.push(...Object.keys(propertyIndex))
+      // Check if property exists in propertyMap first (quick check)
+      const propertyInfo = dataSource.propertyMap[propertyKey]
+      if (!propertyInfo) {
+        continue
+      }
+
+      // Collect values from pre-computed object properties
+      for (const [, objProps] of Object.entries(dataSource.objectProperties)) {
+        const value = objProps[propertyKey]
+        if (value !== undefined) {
+          allValues.push(String(value))
+        }
       }
     }
 
@@ -130,11 +136,89 @@ export function useFilterUtilities(
     return []
   }
 
+  /**
+   * Computes full property data for a given property key (min/max, valueGroups)
+   */
+  const computeFullPropertyData = (propertyKey: string): PropertyInfo | null => {
+    const valueToObjectIds = new Map<string, string[]>()
+
+    for (const dataSource of dataStore.dataSources.value) {
+      // Check if property exists in this data source
+      if (!dataSource.propertyMap[propertyKey]) {
+        continue
+      }
+
+      // Collect values and their associated object IDs using pre-computed data
+      for (const [objectId, objProps] of Object.entries(dataSource.objectProperties)) {
+        const value = objProps[propertyKey]
+        if (value !== undefined) {
+          const stringValue = String(value)
+          if (!valueToObjectIds.has(stringValue)) {
+            valueToObjectIds.set(stringValue, [])
+          }
+          valueToObjectIds.get(stringValue)!.push(objectId)
+        }
+      }
+    }
+
+    if (valueToObjectIds.size === 0) {
+      return null
+    }
+
+    const uniqueValues = Array.from(valueToObjectIds.keys())
+    const firstValue = uniqueValues[0]
+    const isNumeric =
+      typeof firstValue === 'number' ||
+      (!isNaN(Number(firstValue)) && String(firstValue) !== '')
+
+    if (isNumeric) {
+      const numericValues = uniqueValues.map((v) => Number(v)).filter((v) => !isNaN(v))
+      const min = Math.min(...numericValues)
+      const max = Math.max(...numericValues)
+
+      const numericValueGroups: { value: number; id: string }[] = []
+      for (const value of uniqueValues) {
+        const objectIds = valueToObjectIds.get(value) || []
+        for (const objectId of objectIds) {
+          numericValueGroups.push({
+            value: Number(value),
+            id: objectId
+          })
+        }
+      }
+
+      return {
+        key: propertyKey,
+        type: 'number',
+        objectCount: valueToObjectIds.size,
+        min,
+        max,
+        valueGroups: numericValueGroups,
+        passMin: null,
+        passMax: null
+      } as NumericPropertyInfo
+    } else {
+      return {
+        key: propertyKey,
+        type: 'string',
+        objectCount: valueToObjectIds.size,
+        valueGroups: uniqueValues.map((value) => ({
+          value: String(value),
+          ids: valueToObjectIds.get(value) || []
+        }))
+      } as StringPropertyInfo
+    }
+  }
+
   const createFilterData = (params: CreateFilterParams): FilterData => {
     const { filter, id } = params
 
-    if (isNumericPropertyInfo(filter)) {
-      const numericFilter = filter as NumericPropertyInfo
+    // If the filter doesn't have full data, compute it now
+    const fullFilter =
+      filter.objectCount === 0 ? computeFullPropertyData(filter.key) || filter : filter
+
+    if (isNumericPropertyInfo(fullFilter)) {
+      const numericFilter = fullFilter as NumericPropertyInfo
       const { min, max } = numericFilter
       const range = max - min
 
@@ -178,7 +262,7 @@ export function useFilterUtilities(
         selectedValues: [],
         condition: StringFilterCondition.Is,
         type: FilterType.String,
-        filter: filter as StringPropertyInfo,
+        filter: fullFilter as StringPropertyInfo,
         isDefaultAllSelected: true
       } satisfies StringFilterData
     }
@@ -388,11 +472,11 @@ export function useFilterUtilities(
           filter.condition === ExistenceFilterCondition.IsSet ||
           filter.condition === ExistenceFilterCondition.IsNotSet)
       ) {
-        // Handle lazy loading: if isDefaultAllSelected is true and selectedValues is empty,
-        // use all available values from pre-computed indices
         const values =
           filter.isDefaultAllSelected && filter.selectedValues.length === 0
-            ? getAllPropertyValues(filter.filter.key)
+            ? filter.filter.valueGroups
+                ?.map((vg) => String(vg.value))
+                .filter((v) => v !== 'null' && v !== 'undefined') || []
             : filter.selectedValues
 
         const { condition } = filter
@@ -533,43 +617,32 @@ export function useFilterUtilities(
   }
 
   /**
-   * Gets property options from the data store
+   * Gets property options from the data store (optimized to use propertyMap)
    */
   const getPropertyOptionsFromDataStore = (): PropertyInfo[] => {
     const allProperties = new Map<string, PropertyInfo>()
 
     for (const dataSource of dataStore.dataSources.value) {
-      for (const [propertyKey] of Object.entries(dataSource.propertyMap)) {
-        if (shouldExcludeFromFiltering(propertyKey)) {
-          continue
-        }
+      const propertyKeys = Object.keys(dataSource.propertyMap)
 
+      for (const propertyKey of propertyKeys) {
         if (allProperties.has(propertyKey)) {
           continue
         }
 
-        const propertyIndex = dataSource._propertyIndexCache?.[propertyKey] || {}
-        const values = Object.keys(propertyIndex)
-
-        if (values.length === 0) {
-          continue
-        }
-
-        const firstValue = values[0]
-        const isNumeric = !isNaN(Number(firstValue)) && firstValue !== ''
+        const propertyInfo = dataSource.propertyMap[propertyKey]
+        const value = propertyInfo.value
+        const isNumeric =
+          typeof value === 'number' || (!isNaN(Number(value)) && String(value) !== '')
 
         if (isNumeric) {
-          const numericValues = values.map((v) => Number(v)).filter((v) => !isNaN(v))
-          const min = Math.min(...numericValues)
-          const max = Math.max(...numericValues)
-
           allProperties.set(propertyKey, {
             key: propertyKey,
             type: 'number',
-            objectCount: values.length,
-            min,
-            max,
-            valueGroups: values.map((value) => ({ value: Number(value), id: '' })), // IDs not needed for selection
+            objectCount: 0,
+            min: 0,
+            max: 0,
+            valueGroups: [],
             passMin: null,
             passMax: null
           } as NumericPropertyInfo)
@@ -577,11 +650,8 @@ export function useFilterUtilities(
           allProperties.set(propertyKey, {
             key: propertyKey,
             type: 'string',
-            objectCount: values.length,
-            valueGroups: values.map((value) => ({
-              value,
-              ids: propertyIndex[value] || []
-            }))
+            objectCount: 0, // Not needed for selection
+            valueGroups: []
           } as StringPropertyInfo)
         }
       }
diff --git a/packages/frontend-2/lib/viewer/composables/setup/filters.ts b/packages/frontend-2/lib/viewer/composables/setup/filters.ts
index c98a2f595..fb1c97be5 100644
--- a/packages/frontend-2/lib/viewer/composables/setup/filters.ts
+++ b/packages/frontend-2/lib/viewer/composables/setup/filters.ts
@@ -153,19 +153,9 @@ export const usePropertyFilteringPostSetup = () => {
    */
   const applyPropertyFilters = () => {
     const objectIds = dataStore.getFinalObjectIds()
-    const extension = filteringExtension()
 
-    extension.resetFilters()
-
-    const hasAppliedFilters = filters.propertyFilters.value.some(
-      (filter) => filter.isApplied
-    )
-
-    if (objectIds.length > 0) {
-      extension.isolateObjects(objectIds, 'property-filters', false, true)
-    } else if (hasAppliedFilters) {
-      extension.isolateObjects(['no-match-ghost-all'], 'property-filters', false, true)
-    }
+    filters.isolatedObjectIds.value = objectIds
+    filters.filteredObjectsCount.value = objectIds.length
   }
 
   /**
@@ -181,6 +171,34 @@ export const usePropertyFilteringPostSetup = () => {
     { deep: true }
   )
 
+  /**
+   * Watch for property filter results and apply to viewer extension
+   */
+  watchTriggerable(
+    () => filters.filteredObjectsCount.value,
+    () => {
+      const extension = filteringExtension()
+      const objectIds = dataStore.getFinalObjectIds()
+
+      extension.resetFilters()
+
+      const hasAppliedFilters = filters.propertyFilters.value.some(
+        (filter) => filter.isApplied
+      )
+
+      if (objectIds.length > 0) {
+        extension.isolateObjects(objectIds, 'property-filters', false, true)
+      } else if (hasAppliedFilters) {
+        extension.isolateObjects(
+          ['no-match-ghost-all'],
+          'property-filters',
+          false,
+          true
+        )
+      }
+    }
+  )
+
   /**
    * Watch for changes to filter logic (AND/OR)
    */
diff --git a/packages/frontend-2/lib/viewer/composables/setup/postSetup.ts b/packages/frontend-2/lib/viewer/composables/setup/postSetup.ts
index d9c04b529..32008accf 100644
--- a/packages/frontend-2/lib/viewer/composables/setup/postSetup.ts
+++ b/packages/frontend-2/lib/viewer/composables/setup/postSetup.ts
@@ -61,7 +61,6 @@ import {
   usePropertyFilteringPostSetup,
   useManualFilteringPostSetup
 } from '~/lib/viewer/composables/setup/filters'
-import { useFilteredObjectsCountPostSetup } from '~/lib/viewer/composables/setup/filteredObjectsCount'
 import { useFilterUtilities } from '~/lib/viewer/composables/filtering/filtering'
 import { useFilteringSetup } from '~/lib/viewer/composables/filtering/setup'
 
@@ -860,7 +859,7 @@ export function useViewerPostSetup() {
   useFilterColoringPostSetup()
   usePropertyFilteringPostSetup()
   useManualFilteringPostSetup()
-  useFilteredObjectsCountPostSetup()
+  // useFilteredObjectsCountPostSetup() // Disabled - managing count manually in applyPropertyFilters
   useDisableZoomOnEmbed()
   useViewerCursorIntegration()
   useViewerTreeIntegration()
diff --git a/packages/frontend-2/lib/viewer/helpers/filters/constants.ts b/packages/frontend-2/lib/viewer/helpers/filters/constants.ts
index 9cae9b85c..d3e16cea7 100644
--- a/packages/frontend-2/lib/viewer/helpers/filters/constants.ts
+++ b/packages/frontend-2/lib/viewer/helpers/filters/constants.ts
@@ -35,7 +35,7 @@ export const FILTERS_POPULAR_PROPERTIES = [
   'phaseCreated',
   'ifcType',
   'layer'
-] as const
+]
 
 // UI Constants
 export const PROPERTY_SELECTION_ITEM_HEIGHT = 36
diff --git a/packages/frontend-2/lib/viewer/helpers/filters/types.ts b/packages/frontend-2/lib/viewer/helpers/filters/types.ts
index 2eb7c4d46..6822203df 100644
--- a/packages/frontend-2/lib/viewer/helpers/filters/types.ts
+++ b/packages/frontend-2/lib/viewer/helpers/filters/types.ts
@@ -141,7 +141,7 @@ export type DataSource = {
   rootObject: Nullable<SpeckleObject>
   objectMap: Record<string, SpeckleObject>
   propertyMap: Record<string, PropertyInfoBase>
-  _propertyIndexCache?: Record<string, Record<string, string[]>>
+  objectProperties: Record<string, Record<string, unknown>>
 }
 
 export type ResourceInfo = {