gfx af (2gb vram example)
gfx af 0 (4gb vram example)
gfx af 1 (to turn it back on)
"Anisotropic filtering is a method of taking many samples of a texture to produce a higher quality image. AF is a setting on each texture."
The above tips I picked up from the A18 Dev Diary thread. From what I've read, if you have less than 2gb vram, use the first option.
Follow faatal for any updated news or changes regarding af.
Hope this helps.
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1 enabled (uses texture's value)
2 is force enable, which is making AF maxed on every texture