I was playing GTA4 and got pissed at the 16 fps, so I installed GTA VC. The mouse is really messed up. When I leave the settings at default, the mouse is too sensitive, but when I lower the sensitivity it only affects the X axis. They Y axis is still at the default ridiculously high sensitivity. Google searches turn up a bunch of people with the same problem, but there are no solutions anywhere. Apparently this affects Logitech mice, and it is solved for them by removing their driver and using the generic windows one. I have a microsoft mouse, and I removed the Intellipoint software for it but that didn't fix it.