Quote:
Antialiasing=0
Sets your AA. This is a big performance hit, but it sure can look nice with it on. See the note about HDR and SM3 above.
AnisotropicFiltering=0
AF is pretty much another type of AA. Also a big performance hit. Makes trees prettier.
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A tiny bit misleading but otherwise sound. AF is not another type of AA.
AA reduces "jaggies" on lines by smoothing the edges.
AF improves the appearance of textures.
Setting both to 0 should certainly improve performance at the expense of image quality, although I would expect a very small performance hit for a decent visual improvement running both of these on minimal.