When I move my mouse left and right fast it jumps up and down the screen randomly. I have tried using a different mouse mat, plugging it into a different usb plug and on another computer. I have a Gigabyte M6900 and my dpi is 800. Thanks for any help. Edit: The mouse is about 2 years old, i've used it quite a lot. I've also cleaned it now, there's no noticeable change. I was also told to uninstall the mouse drivers but it came with none.