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Keeps textures sharper when viewed at an angle and is usually cheap on modern GPUs.
FPS
Very low
Visual
Medium
VRAM
Very low
CPU
None
Latency
None
What it does
Roads, floors and distant surfaces remain clearer at 8x or 16x. The performance cost is normally small compared with the visual benefit.
Games may also call it: Texture Filtering, AF
Decision guide
Lower it when
Lower it only after heavier options have already been tuned or when a specific game implements it badly.
Keep it high when
Keep it high in most games because the image-quality gain is usually inexpensive.
Handheld advice
8x or 16x is commonly a sensible handheld value.
Restart
Usually not required
Some games still apply changes only after reloading a scene or restarting.
Do not overread the meter
Very old or unusual engines can behave differently.