Thank you for performing some thorough testing.
Ideally, I’d like to get a test case that we can reproduce in a clean project to diagnose exactly what is causing the issue. One other thing I’ve noticed were the error messages that were appearing after exiting PIE. I fixed a few of them regarding the Bobblehead pieces being set to Simulate Physics, but not actually having the collision settings to reflect that, and I haven’t seen the freeze yet. I am not sure if that is related, or if the freeze is just being elusive, but go ahead and set the collision of the Bobblehead components in the Lander BP to Query and Physics collisio and see if you’re still getting the freeze to occur.