I haven't posted in the bug forum yet, as I wasn't sure if it was really an issue, but I've been blacking out like mad in the spits and 109K. I also get the tunnel vision, but occasionally it starts from the center, instead of creeping in from the peripheral. One moment, I'm entering a turn, the next, I'm looking at a big black dinner plate in the center of the screen, with unrestricted vision around the perimeter.