Having some trouble figuring out how to apply the player's crouch capsule height instantly. Right now it seems that there's some sort of delay from the time the crouch btn is pressed up to the time the capsule height is actually reduced.

check under Character

Flt stand_crouch, // stand 0..1 crouch blend value

if you manually adjust this you should be able to set it straight to 0 or 1. without the blend value.

that's from the top of my head, but i believe this is what controls it with the controller

Thanks for the ref! I'll give it a shot and let you know about the results.