Guild Wars 2

It started happening just before the last patch (it happened once a day or two before). The game graphics will freeze. I can still hear what is going on live, but the graphics are completely frozen. If I minimize the game and bring it back up, the screen is completely black. I cannot see popup windows (e.g., the Hero screen) or even the game menu. Nothing. I have to tell Windows to stop the game. It has happened several times since the patch.

Has this been happening to anyone else?

My screen randomly turns black as well. Sound will still play as normal. And I can bring up the logout / character select screen but I can`t select any option. Minimizing the game works, and my computer doesn`t seem to have any problems when it occurs. Restarting the game resets the game to normal. (I can run the game well above recommended specs)