Metro: Last Light includes support for SSAA (super sampling anti-aliasing) which is a type of AA that creates the best image quality. It is “pure” full scene AA with no compromises and the reason other AA technologies exist is because SSAA is very slow. As a result most of you will play with it disabled and the results above show you why. The GeForce GTX Titan went from 72fps at 1680x1050 to just 48fps at the same resolution with SSAA enabled.