I'm not sure if this is a bug but it is really frustrating to deal with from an fps gamer's perspective. The game seems to have a mouse deceleration that I can't get rid of. I have tried disabling mouse smoothing as well as running as administrator. If I slowly move my mouse to the edge of my mouse pad and then swipe back quickly, in most fps games I would return back the the original position, but in DAYZ I go about half the distance back. This makes combat really inconsistent for me and I am sure a lot of other people.