Hi guys, I've been having this issue for the last couple of GUs and it's really driving me crazy. If I've been in-game for a while (ie more than 30 mins) I cannot alt-tab (if running in fullscreen) or alt-return (if running fullscreen windowed) without the game crashing and displaying error G12. This happens *every* time I try to alt tab / return after playing for a while. Has anyone come across this issue before?