isn't difficult! 720 degrees is useless, should matter as moving the mouse, but not more than 180.
the whole matter of finding the right sensitivity value or nearly so.
the fov is too high, use 125 (probably 130)? try 120 or less.
https://www.youtube.com/watch?v=gZ1plnx0Hco
maybe this video will help you, i don't need.