I have an ati 6870 and have been playing metro 2033 at very high settings with no AA at 1920x1080. my frame rate is about 39-41 in most scenarios without depth of field or tessellation. I haven't used advanced depth of field because it drops the frame rate at least 15 or so frames. But when I turn on tessellation my frame rate is identical and I only see a small difference when face to face with a character. Is it not on full settings, because I expected to see more beauty and a huge drop in fps. Can anyone help out?