Updated the older synchronous object loading function

packages/viewer/src/modules/SpeckleRenderer.ts

@@ -496,8 +496,8 @@ export default class SpeckleRenderer {
     this._needsRender = true
   }
 
-  public addRenderTree(subtreeId: string) {
-    this.batcher.makeBatches(
+  public async addRenderTree(subtreeId: string) {
+    await this.batcher.makeBatches(
       this.viewer.getWorldTree().getRenderTree(subtreeId),
       SpeckleTypeAllRenderables
     )

packages/viewer/src/modules/Viewer.ts

@@ -477,7 +477,7 @@ export class Viewer extends EventEmitter implements IViewer {
     Logger.log('SYNC Tree build time -> ', performance.now() - t0)
 
     t0 = performance.now()
-    this.speckleRenderer.addRenderTree(url)
+    await this.speckleRenderer.addRenderTree(url)
     Logger.log('SYNC batch build time -> ', performance.now() - t0)
 
     this.zoom()