I’ve entered a feature request to cancel the collision generation with UE-17040. I think this is a very helpful and useful idea.
I was able to reproduce the lag using a simple box, one with 60k and 120k tris. The collision placement smoothness is based on the poly count of the mesh. I’ve reported this with UE-17048.
Thank you for your help and patience. It’s always greatly appreciated.
I also didn’t mean to suggest that High-poly is bad, just that the calculations needed when doing the voxelization and combining the multiple hulls down to fix the mesh can be a long process. The more verts there are the more calculations there are.