http://bugs.winehq.org/show_bug.cgi?id=7640
--- Comment #40 from Brian execrable@gmail.com 2009-06-21 05:17:06 --- Actually it seems like this is caused (at least in Halo) by the mouse warping done by the builtin dinput. I disabled it in the registry and the mouse was pretty smooth. Of course without warping the mouse doesn't stay in the window, so it's still not playable.