I have a dog mesh here. When my modeler imported it from another game of his, it started causing massive CPU spikes, especially on low graphics mode. The mesh does not have any scripts inside, just the bones and some sounds. Removing the mesh ID/ deleting the mesh causes the CPU to return to normal. I have tried putting the mesh onto a separate experience, and it seems to be fine there, so I’m not sure what the culprit is.
Note: This has also happened before with another model imported from another game of his
Can’t reproduce in a separate place (as you also saw), could you attach a minimal subset of the place that does reproduce it to the private part of the report?
We can’t access developer’s experiences.
Shot in the dark, do you have a Humanoid under the workspace? That could be picking up the bones in the model and becoming slow.