scaling , where there might be IQ 'issues'We proceeded to attempt to verify the problem on our equipment, and we were successful. It certainly appears that there is a problem on the GTX 480/470 that causes diminished visual quality in Metro 2033 in certain rendering modes. Consider the following screenshot:
Looking a little further, we configured both video cards down to the "High" Quality setting, which produced the screenshot comparison below.
The difference vanishes. So this issue is specific to the "Very High" Quality setting, which lead us initially to believe that AAA or some other shader or effect used with the "Very High" setting. http://www.hardocp.com/article/2010/04/06/metro_2033_image_quality_followup