If you have a player movement volume with the walk speed set to a slower speed than normal crouch speed (e.g. 100) and have crouch enabled in it, you can crouch walk faster than the set walk speed.
Steps to Reproduce
Crouch walk in a player movement volume set to a low walk speed.
What I expected to happen
Crouch walk speed is either same speed or slower than the set walk speed.
What happened
Crouch walk speed is faster than the set walk speed.