I just try it out sometimes when I'm practicing my TDM, but it does not wanna work properly at all.
It tracks near the player, which is fine until you can't move your guns to the player, it will stay on this area until you had to literally position everything away and aim again. Usually I have it on a low sensitivity so I can learn how not to flick when aiming, but then I realize how brutal it is to TDM up close.
