I realized recently that I get, with minimum shaders, 930ish FPS looking at the sky, but only 500 when looking at any texture (e.g. the ground). If I make the ground invisible, then my FPS goes back up to 930, regardless of where I look. I've tried messing with my graphics settings on my AMD graphics controller, but I could only add about 50-100FPS, which did nothing to fix the issue. Any ideas?