@jeffmeyer3d , thanks for adding your thoughts. That is a pain if true, could be why in general there doesn’t seem to be much performance difference but with tens of thousands of “modular” meshes, it would probably be a larger issue.
I wonder if 5.0-5.2 has changed that as you mentioned.
When I get home from my day job today I might look at putting together a test as @ClockworkOcean suggested.
I am using 5.2 so it could be “hopefully” static mesh blueprint actors are instanced now.