If you are having graphics issues and are using a 3rd party Coms program like TeamSpeak 3, and your graphics are acting crazy like text disappearing, lines across the screen, and the like, your issue might be your communication programs Overlay feature. I use TeamSpeak 3, and even though it was not visible, my Overlay plugin was active. Once I shut this down and logged back in, all my graphics issues went away. Don't know if this will help you, but its a place to start. Good luck!