Could you explain why it takes so long after you quit the game to regain complete control of your PC again? Other games relinquish control almost immediately, this games takes so long I usually just reboot to regain my speed again.
I'm not an expert, but personal experience makes me want to say this is a memory thing. I had this happen forever, but I installed an extra gig of memory yesterday, for a total of 1.25 GB, and now my BD quit-to-desktop is almost instantaneous, and even the gamma adjustment (I have it cranked moderately high in most of the games I'm playing right now) goes away before I've been back on the desktop for five seconds.
