But I don’t see your attached project though… if you still have it lying around let me know!
For what it’s worth, from the callstack, it seems related to static mesh compilation / physics data.
I wonder if you could load the mesh separately prior to spawning it (and make sure to get it compiled), which would maybe be in a better place. It’s possible that it being in an ISM isn’t helpful.
Or alternatively, since these are piecewise things, maybe you could spawn a static mesh component and set the mesh on it directly instead of going through the Static Mesh Spawner.
Cheers,
Julien