Quote Originally Posted by Rekujin View Post
Have you tried to disable Aero while you play? I'm assuming you're on Windows 7... you could try updating Windows fully + graphic card drivers. Also, download your mouse software if you have a gaming mice and try to use Raw Input for the settings.

Another thing to check is Vertical Sync (Vsync) make sure that's disabled and see how ur mouse movement goes.
Thanks for responding to me!
I'm not sure what you mean when asking about "Aero". My OS is completely up to date as is my graphics and mouse software. I use a Logitec M518 mouse and dont remember seeing any "Raw Input" setting in the software for it.