Groom in UE5 is borked with motion, and level load times are insanely long

[Symplex]

@scythewraith

one thing I found was the groom now needs a physics asset assigned to it
all adjusted accordingly as well to fit with the groom hair, as UE4 it was not required for some reason.

Just wanted to chime in and say that this fixed it for me. My mesh had an improper Physics asset (read: none) due to a scaling issue from Blender → UE4, causing the hair to explode outward while rotating, resulting in an engine crash. The hair asset I’m using isn’t any longer than shoulder length, though.