Just tested Witcher 2 Disabled In-Game AA, and manually enabled (Allowsharpen). MLAA = Game looks ok* when the render output is static (or the screen is not moving), But it still has some weird...pixelated aliasing. And when you start to move...the pixels look blocky* like its unable to decide what color to put in that location, like take look at some location on the screen like the roof tiles of a building and then move (You will see some of the pixels in a set of square shapes on roof tiles rapidly shifting color, like blocks) FXAA = Game looks better, even during motion. Both the MLAA and FXAA settings were taken right out of the box, didn't change anything(in case of FXAA, default values set by [Some_Body]). Just pure observation... -Edit- The blocky unstably image is also seen in MLAA without enabling allow-sharpen..