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Performance of StaticMesh vs StaticMeshActor

Development Discussion Blueprint Visual Scripting
#1

Hi. I’m seeing a weird performance issue.
I created a simple project from the template. I added a blueprint with Actor as a parent and simply added a StaticMesh component to it with 1M Cube as a mesh. Upon Begin Play I then generate 400 objects of this class. Now as soon as those objects get in the view frustum I see a huge drop in performance, running at like few FPS.

I then modify the blueprint and reparent it to StaticMeshActor (use the same 1M Cube) and remove my original StaticMesh. Now everything runs smoothly and with high FPS.

Is this a known issue about Actors with StaticMeshes or I need to check my Project settings or something?

P.S. Not sure if it is relevant, but this is on Oculus Quest. I haven’t tried in non-VR project, I’m thinking beefier GPU on PC may make it less noticeable.

#2

It’s probably something else being the matter.
For example, is the Actor you added the component to, or the component itself, marked as Static, or Movable?

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#3

If you are worried about performance, then just use istancing.

#4

Good call! Thank you, that was it. Changing the StaticMesh from its default Movable to Static fixed the issue!

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