CTD when changing camera freelook speed in game

CTD when trying to change camera freelook speed in game.
By default it’s set to 25, when I’m trying to move the slider in game, game crashes.

Same for me.

I don’t think this is necessarily a beta issue. I had reported it a while ago:

This is still a problem and causes immediate CTD on my system! As soon as I try to change the Freelook speed, game crashes!