I had a ton of different mouses and felt the same way, i resetted windows a couple times and now i have a razer trinity. every time I close my pc or put to sleep mode. and a day or two passes and i use it, it feels so sensitive it feels like the mouse sens got faster and it just feels very uncomfy using it. I realized i had enhanced point precision on in windows a month ago. COuld it be ME? or is it windows doing something (resetting mouse dpi or making it faster).