I had the FOV set to 75. anything more than that and the world starts bending, which i'm not a huge fan of. Also, when I get close enough, the ground disappears or goes white. Huge chunks of it. I'll look away, and look back, the ground will load, but only to maybe 1/6 of the texture it should. Like I said, except for the graphics and bumping the terrain up, everything is stock...I don't remember having this problem a few months ago....I'll see if I can post pics.