I am running a late 2012 Macbook Pro. Automatic graphic settings adjust my graphics to "ultra-high" settings, but I usually lower the setting to "high" or "medium." Regardless of which setting I use, I still occasionally experiance what I can only describe as tearing or slicing in the graphics. It is a horizontal glitch where the top and bottom portion of the screen are not alligned. It only happens for a split second. And, it seems to happen more in heavily popluated areas.
Any thoughts or suggestions?