This is BEYOND wrong. You want your priority at high, it set's all other programs at a lower priority. It's common sense, you are playing Crossfire, at the moment ITS YOUR MAIN PRIORITY. So you set it to high, it will not change your ping at all and that is literally the dumbest thing I have heard on ping so far. Ping has to do with how long it takes for packages(COmputer data) to go to the source and back. The further you are from the source(Server) the higher your ping is. Ping DOES NOT cause all lag. FPS(Frames per second) is the main cause of lag. If you are anything below 60fps everything is a "Slideshow" It is not BUTTER SMOOTH GAMEPLAY. anything under 30 you will be lagging.