UE4 freeze when ue4 set all bodies below simulate physics is called in begin play

i have a simple actor with a mesh that calls set all bodies below simulate physics. there isn’t nothing else for this actor
i can play the actor in the level in editor, but if I use spawn from a class the engine freezes on “set all bodies below simulate physics” in blueprint

i think it is because of “physical animation component” if I don’t call that then everything is fine

It seems adding a delay with 0.5 seconds would solve the issue. but still it a problem since there is no indication when the physical animation component is active and ready to be used. the problem is that the spawning should be complete fully before physical animation component can be used