Performance/profiling - CharacterMovementComponent / CharMoveComp expensive

Hi I’m doing profiling on my game - CharacterMovementComponent CharMoveComp seems to be chewing up my game thread - digging down into it more it seems to be physics related - on mobile this really slows the game down on slower devices.

Can anyone offer me any suggestions on what this means & how to free this up? i.e. is my collision complexity too much? or is there a way to simplify my physics in a ini file? i’ve looked at the settings and ive tried tweaking things but with no luck.