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Adds edge contrast after rendering or upscaling to restore perceived detail.
FPS
Very low
Visual
Medium
VRAM
None
CPU
None
Latency
None
What it does
Adds edge contrast after rendering or upscaling to restore perceived detail. Sharpening cannot recover real detail and can amplify noise.
Games may also call it: CAS, FidelityFX CAS, Radeon Image Sharpening, Sharpen Filter
Decision guide
Lower it when
Change it mainly for preference, clarity, compatibility, or frame-pacing behavior rather than raw FPS.
Keep it high when
Keep it higher when the effect supports the art direction and performance remains stable.
Handheld advice
Treat this as a secondary handheld tweak after resolution, upscaling, shadows and heavy lighting are under control.
Restart
Usually not required
Some games still apply changes only after reloading a scene or restarting.
Do not overread the meter
Sharpening cannot recover real detail and can amplify noise. This score is an editorial cross-game estimate, not a measured result for every engine.