New: LeanFPS now measures your FPS and 1% lows, so you can see if a tweak helped.New: FPS and 1% low trackingSee how

Terms of Use

Last updated 10 October 2026

What LeanFPS does

LeanFPS changes Windows settings and process priorities to help games run more smoothly, and measures frame rates. It needs administrator rights. It saves the previous value of every setting it changes so you can restore it with Restore all or leanfps.exe --restore-all. The list of changes is on the Windows gaming tweaks page.

Your responsibilities

No guaranteed FPS gain

Results depend on your hardware, drivers and games. Many systems gain little from system tweaks, which is why LeanFPS measures the result. We make no promise of a specific improvement.

LeanFPS Pro

Limitation of liability

LeanFPS is provided as is. To the extent the law allows, we are not liable for indirect losses, lost data or lost profits arising from using it, and our total liability is limited to the amount you paid for Pro. Nothing here limits rights you have under consumer law where you live.

Contact

contact@leanfps.com. See also the privacy policy.