Mouse acceleration (also called "Enhance pointer precision") is a feature in which the distanced moved by the on-screen pointer is not simply proportional to the distanced moved by the mouse. Instead, it also takes mouse speed into account.
I have mouse acceleration disabled in my Windows 7, but I'm under the impression that this effect is still happening as I play Modern Warfare 3. Does anyone know if the game implements its own version of mouse acceleration? If so, how can I disable it?
The "Smooth Mouse" option is also already disabled for me.