Maybe its just from playing so much Mw2 on 10 sensitivity, but I feel like I move so slow! My biggest problem is when playing support and seeing an assassin run past me to assassinate me. I takes way to long to turn around and pump lead into her face. 10 for me is way to slow, at lease make a 20 or 30 sensitivity ok maybe not so drastic but make me turn twice as fast or more.