I've noticed something odd since the recent patch. There is graphical corruption that wasn't there before, and a flickering. I'm not sure why, because My Nvidia Geoforce 650 2 GIG appears to be a card that is compatible with the game, according to the minimum specs on the Steam store page for the game. I've tried shutting off the antistropic, which sometimes causes problems, to no avail. I'm using the GOG version of the game. Any ideas as to why this is happening?