I've been using it for a week now, there were no problems, unlike other mice - you don't need to restart it after connecting the mouse to the PC. Tested only in CS:GO, well behaved. Very nice little thing - smooth glide. With it, the camera in the game becomes calm, not jerky. If you look at the pros, and then at the price (1239, it used to be even cheaper), then she makes many mice, so 5 stars.