Just to say i have weird graphics also not as bad as yours. But seems to happen when using the ui like in skill panel or when i mouse over gear. I get lines and boxes that spread across the screen.I put a bug ticket in for it. My graphic drivers are up to date. Plus i also get missing text from pop up boxes.
PS. Seems to happen after i move zones.
Just found this thread with some pics from another user with the issue i have.