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The number of pixels rendered for the final image; usually one of the largest performance levers.
FPS
Very high
Visual
Very high
VRAM
Low
CPU
Very low
Latency
None
What it does
Higher output resolution asks the GPU to shade more pixels every frame. Native resolution is sharpest, while a lower resolution or render scale can create a large FPS gain at the cost of clarity.
Games may also call it: Display Resolution, Screen Resolution
Decision guide
Lower it when
Lower it when the GPU is near full load and upscaling alone cannot hold the target frame rate.
Keep it high when
Keep it native when text clarity and fine detail matter and the frame-time target is already stable.
Handheld advice
On a handheld screen, a modest drop combined with a good quality upscaler often looks cleaner than expected.
Restart
Usually not required
Some games still apply changes only after reloading a scene or restarting.
Do not overread the meter
Display scaling, panel resolution and internal render resolution are not always the same option.