of course, we think 60-100% game sensitivity, 5000-12000 dpi are all OK.it's only a recommendation.you can set them as you feel right.in fact, you may lower your mouse dpi and USB report rate,that will give you a more stable control.
It should be ok to use any dpi as your mouse claimed.Or you might have a defective one.
if a mouse is a 12000dpi mouse, it should work properly even if you set it to its MAX.and we always set mouse to its MAX while playing games.