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Uses traced rays for direct or indirect lighting and can reshape the entire scene.
FPS
Very high
Visual
Very high
VRAM
High
CPU
Low
Latency
Very low
What it does
Ray-traced lighting often has a larger and more consistent cost than a single reflection or shadow effect.
Games may also call it: RT Lighting
Decision guide
Lower it when
Disable it when the base frame rate is unstable or the game already has a strong raster lighting path.
Keep it high when
Keep it only when the lighting difference is worth a lower target and aggressive reconstruction.
Handheld advice
This is rarely a sensible first-choice handheld option.
Restart
Usually not required
Some games still apply changes only after reloading a scene or restarting.
Do not overread the meter
Quality levels can represent radically different ray counts and bounce methods.