I've had the RAT 9 a while now and everything was fine until recently it would firstly the dpi setting would just drop suddenly, not often but significant then it would just stop responding during games and also on the desktop until I shake it rapidly for a few seconds the it would be back on track, this is a huge issue for me as it will definitely get you killed in games and cause you to fail time sensitive tasks, this is quite ridiculous and unacceptable...