Metro 2033: This year's most underrated game?

[ameratsu]

I'm playing an outdoor section now (almost at the library I think).

I'm getting 35-45+ fps in most lighter areas (darker areas are more like 50 fps) with 1680x1050, Very High settings (dx10), AAA, 16xAF, Advanced PhysX disabled according to FRAPS. I have a q6600, p45 mobo, 4gb ram, 4890 1gb. Changing the settings from Very High to just High has very little effect on my framerate for some reason.