LeanFPSStep 1
Built-in game list
Executable names of popular games and emulators, matched instantly with no network access.
8 genres · emulators included
Game profiles that know what you are playing
LeanFPS game profiles sort every game into one of eight genres and apply the tweaks that make sense for it. A competitive shooter needs different help than an open-world RPG, and a laptop needs different help than a desktop.
How game profiles detect your game
LeanFPS checks the foreground window every 2 seconds. It does not re-check the same process for 10 seconds, which keeps the cost close to zero. It then tries these sources in order:
Step 2
Steam and Epic libraries
Installed games are read from the launchers’ own library files on your PC.
Step 3
GOG, Battle.net, Ubisoft, Xbox, Riot, EA, Rockstar
Known install folders and registry entries of the other launchers.
Step 4
Fullscreen and 3D apps
An unknown program covering the whole screen is treated as a game. A windowed 3D program gets a one-time question, and your answer is remembered.
Game profiles by genre
Each genre lists the games in the built-in list, the extra tweaks it turns on, and in-game advice for that genre (the first tip appears on the game card). Tips are advice only; LeanFPS never edits game settings files.
Competitive shooters
Extra tweaks: Raw aim: mouse acceleration off, High priority for competitive play.
- Turn on NVIDIA Reflex or AMD Anti-Lag in the game's graphics settings.
- Cap FPS a little below what your GPU can hold so it never sits at 100%: lower latency, steadier frames.
Counter-Strike 2VALORANTApex LegendsFortniteCall of DutyOverwatch 2Rainbow Six SiegePUBG: BattlegroundsEscape from TarkovTHE FINALSMarvel RivalsBattlefield 2042Destiny 2Team Fortress 2Halo InfiniteHelldivers 2Warframe
MOBA
Extra tweaks: High priority for competitive play.
- Cap FPS at a multiple of your monitor's refresh rate for even frame pacing.
League of LegendsDota 2
Strategy
Uses the standard session tweaks only.
- Late-game turns are CPU-bound: close browser tabs before long sessions.
Sid Meier's Civilization VIStarCraft IIAge of Empires IVTotal War: WARHAMMER IIIHearts of Iron IVCities: Skylines II
Open world and AAA
Extra tweaks: Free up standby memory.
- The first run after a driver update stutters while shaders compile. Play 10 minutes before judging.
- Upscaling (DLSS, FSR, XeSS) on Quality usually gains more FPS than any system tweak.
Grand Theft Auto VRed Dead Redemption 2Cyberpunk 2077ELDEN RINGBaldur's Gate 3StarfieldHogwarts LegacyThe Witcher 3: Wild HuntBlack Myth: WukongMonster Hunter WildsGenshin ImpactSea of Thieves
Racing and sim
Extra tweaks: High priority for competitive play.
- Steady frame times matter more than peak FPS: cap FPS at your refresh rate.
Rocket LeagueForza Horizon 5Assetto Corsa CompetizioneiRacing
Sandbox and survival
Extra tweaks: Free up standby memory.
- Render distance is the biggest FPS lever in sandbox games.
MinecraftMinecraft: Java EditionRobloxRustPalworldTerrariaValheim
MMO and online RPG
Extra tweaks: Free up standby memory.
- Crowded cities are CPU-bound: lower 'max visible players' before graphics quality.
World of WarcraftFINAL FANTASY XIV OnlineLost ArkPath of Exile 2Diablo IV
Casual and indie
Uses the standard session tweaks only.
- On laptops, cap FPS to your refresh rate to keep fans quiet and battery longer.
Stardew ValleyLethal CompanyAmong UsFall Guys
Emulators
Emulators are detected too. Because the right game profile depends on the game you load in the emulator, LeanFPS applies the standard session tweaks and lets you pick a genre if you want the extra ones.
Ryujinx (Switch)yuzu (Switch)Cemu (Wii U)RPCS3 (PS3)Dolphin (GameCube/Wii)PCSX2 (PS2)DuckStation (PS1)PPSSPP (PSP)RetroArchxemu (Xbox)Xenia (Xbox 360)
Anti-cheat and game profiles
Some anti-cheat systems block other programs from changing the game process. When that happens, LeanFPS writes the game’s priority to the Windows launch setting for that executable instead, so it applies from the next launch without touching the running game. Every one of these per-game changes is listed in the app and is removed by Restore all.
Game names and executable names in the built-in list come from public sources and are still being checked on real installs. A wrong entry only means the game is found through its launcher library or the fullscreen check instead. If your game is detected wrongly, write to us from the contact page. See all tweaks on the Windows gaming tweaks page, or go back to the game optimizer home.
Game profiles FAQ
My game is not in the list. Will game profiles still work?
Usually yes. Games installed through Steam or Epic are found in their library files, and any unknown program running fullscreen is treated as a game. If the genre cannot be worked out, LeanFPS asks you once and remembers it.
Can I change the genre of a game?
Yes. If a game profile picked the wrong genre, choose another one in the game card. The new genre’s tweaks apply the next time the game is detected.
How are Steam games sorted into genres?
For Steam games outside the built-in list, LeanFPS uses a bundled table built from player-voted Steam tags. It does not guess when the tags are unclear; it asks you instead.
Do game profiles change files inside the game folder?
No. Game profiles only change Windows settings and the game’s process priority. Nothing is written to the game’s files or memory.
Try LeanFPS on your own games
Free to use with no account. The first three games you play get every Pro tweak, so you can compare your own FPS before you decide.