I know this is very random, but I will have one of my keys stick when playing csgo (the a, w, s, or d) key will stick. And not unstick until I press it again. I'm sure its not the keyboard as I have changed the keyboard out for a new one. It can't be my usb input, as I have tried every usb input on the mac pro and am now using the input on my cinema display. Anyone know what the problem could be? It is quite upsetting when it happens. While it isn't the end of the world because its just a game, I would still like to fix it if it is possible.