Grand Theft Auto V Legacy
65 sourced launch options for Grand Theft Auto V Legacy on Steam ↗.
DeveloperRockstar North
PublisherRockstar Games
Released2015-04-13
EngineRAGE
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-anisotropicQualityLevelCopySet anisotropic filter quality level (0-16)DisplaySafe -
-benchmarkCopyStarts the benchmark test from the command linePerformanceDebug-DevExperimental -
-benchmarkFrameTimesCopyOptionally output the individual frame times from the benchmarkPerformanceSafe -
-benchmarkIterationsCopySpecifies the number of iterations for the benchmarkPerformanceSafe -
-benchmarknoaudioCopyDisable audio processing for graphics benchmark purposesPerformanceAudioSafe -
-benchmarkPassCopySpecifies when an individual benchmark scene test should be done, and which test it should bePerformanceSafe -
-borderlessCopySet main window to be borderlessDisplaySafe -
-cityDensityCopyControl city density (0.0–1.0)Experimental -
-disableHyperthreadingCopyDo not count hyperthreaded cores as real ones to create tasksPerformanceSafe -
-dx10CopyForce 10.0 feature setDisplaySafe -
-DX10_1CopyForce 10.1 feature setDisplaySafe -
-dx11CopyUse the DirectX 11 renderer (Unreal Engine games)- Effect
- Selects DX11 as the RHI. Ignored by builds without a DX11 path.
DisplayUniversal Added Jun 27, 2026 Last checked Sep 27, 2026 Also documented for this game on PCGamingWiki · checked Sep 27, 2026Safe -
-fogVolumesCopyEnable lights volumetric effects in foggy weather (0–1)AudioSafe -
-frameLimitCopyNumber of vertical synchronizations to limit game to (0–1)Experimental -
-fullscreenCopyRun in fullscreen mode (Unreal Engine and Source games)- Effect
- Overrides a saved windowed preference. -full is the same option in Source.
DisplayUniversal Added Jun 27, 2026 Last checked Sep 27, 2026 Also documented for this game on PCGamingWiki · checked Sep 27, 2026Safe -
-fxaaCopySet FXAA quality (0–1)Safe -
-grassQualityCopySet grass quality (0–5)DisplaySafe -
-HDStreamingInFlightCopyEnable HD streaming while in flightExperimental -
-heightCopySet the window height in pixels (game-specific spelling)- Effect
- Forces the given vertical resolution. This is a per-game convention rather than an engine standard — Source uses -h, Unity uses -screen-height.
- Example
-height 1080
DisplayPCGamingWiki Added Jun 27, 2026 Last checked Sep 27, 2026 Also documented for this game on PCGamingWiki · checked Sep 27, 2026Safe -
-ignoreprofileCopyIgnore the current profile settingsExperimental -
-keyboardLocalCopySets the keyboard layout to the specified regionExperimental -
-lodScaleCopySet LOD distance level (0.0–1.0f)Experimental -
-nobattleyeCopyLaunch the game with BattlEye Anti-Cheat disabled (works only for Story Mode)NetworkCaution -
-noChunkedDownloadCopyForces patches to be downloaded all at once instead of in chunksExperimental -
-particleQualityCopySet particle quality (0–2)DisplaySafe -
-particleShadowsCopyEnable particle shadows (0–1)DisplaySafe -
-pedLodBiasCopySet LOD distance bias for pedestrians (0.0–1.0f)Experimental -
-postFXCopySet post FX quality (0–3)Experimental -
-reflectionBlurCopyEnable reflection map blur (0–1)DisplaySafe -
-reflectionQualityCopySet reflection quality (0–3)DisplaySafe -
-safemodeCopyStart settings at minimum but does not save themExperimental -
-scOfflineOnlyCopyLaunch the game in offline modeExperimental -
-shaderQualityCopySet shader quality (0–2)DisplaySafe -
-shadowLongShadowsCopyEnable shadow rendering for dusk and dawn (0–1)DisplaySafe -
-shadowqualityCopySet shadow quality (1–3)DisplaySafe -
-shadowSoftnessCopySelects between linear, rpdb, box 4x4, soft 16 (0–3)DisplaySafe -
-SSAOCopySet SSAO quality (0–2)DisplaySafe -
-StraightIntoFreemodeCopyJump straight to multiplayer while loading. If present the game will automatically launch into the multiplayer game in freemodeExperimental -
-tessellationCopySet tessellation on or off (0–3)Experimental -
-texturequalityCopySet texture quality (0–2)DisplaySafe -
-txaaCopyEnable Nvidia TXAA (0–1)Experimental -
-uilanguageCopySet language game uses. Supported values are american (for American English), french, german, italian, spanish, portuguese, polish, russian, korean, chinese, chinesesimp, japanese, mexican (for Mexican Spanish)Experimental -
-UseAutoSettingsCopyUse automatic generated settingsExperimental -
-useMinimumSettingsCopyReset settings to the minimumExperimental -
-vehicleLodBiasCopySet LOD distance bias for vehicles (0.0–1.0f)Experimental -
-verifyCopyCheck game installation for problems and repair any issues found. Disc and non-Steam digital versions onlyDebug-DevExperimental -
-vulkanCopyUse the Vulkan renderer where the game supports it (only engines with a Vulkan backend — Source 2, id Tech 6/7, UE4)- Effect
- Forces the Vulkan rendering backend instead of DirectX or OpenGL. Only has an effect in engines with a Vulkan path; ignored elsewhere.
DisplayPCGamingWiki Added Jun 27, 2026 Last checked Sep 27, 2026 Also documented for this game on ProtonDB · checked Nov 9, 2026Safe -
-waterQualityCopySet water quality (0–2)DisplaySafe -
-widthCopySet width of main render window (default is 640)DisplaySafe -
-windowedCopyRun in windowed mode (Unreal Engine and Source games)- Effect
- Unreal documents pairing it with an explicit resolution. In Source -window, -sw and -startwindowed are the same option.
- Example
-windowed -ResX=1920 -ResY=1080
DisplayEpic Games Documentation Added Jun 27, 2026 Last checked Sep 27, 2026 Also documented for this game on PCGamingWiki · checked Sep 27, 2026Safe -
DXVK_ASYNC=1 %command%CopyEnable asynchronous pipeline compilation in DXVK builds patched with dxvk-asyncProton-Deck -
DXVK_HUD=1 %command%CopyShow DXVK's HUD with the GPU name and driver version, the frame rateProton-Deck -
MANGOHUD=1CopyShow the MangoHud performance overlay (Linux)- Effect
- Draws FPS, frame timing and CPU/GPU load over Vulkan and OpenGL games. MangoHud runs the game, so %command% is what it runs.
- Example
mangohud %command%
Proton-Deck -
PROTON_ENABLE_NVAPI=1 %command%CopyEnable NVIDIA's NVAPI GPU support libraryProton-Deck -
PROTON_HIDE_NVIDIA_GPU=1 %command%CopyForce Nvidia GPUs to always be reported as AMD GPUsProton-Deck -
PROTON_NO_ESYNC=1 %command%CopyDisable eventfd-based synchronisation (Linux, Proton)- Effect
- Turns off in-process esync primitives. Worth trying for games that hang or crash under Proton.
Proton-DeckValve Proton Added Jul 8, 2026 Last checked Sep 13, 2026 Also documented for this game on ProtonDB · checked Nov 9, 2026Safe -
PROTON_NO_FSYNC=1 %command%CopyDo not use futex-based in-process synchronization primitivesProton-Deck -
PROTON_USE_WAYLAND=1 %command%CopyAn alias of PROTON_ENABLE_WAYLAND: use Wine's experimental Wayland driver instead of the default X11 driver, in GE-Proton and Proton-CachyOS (Valve's Proton does not include it)Proton-Deck -
PROTON_USE_WINED3D=1 %command%CopyUse wined3d (OpenGL) instead of DXVK (Linux, Proton)- Effect
- Routes d3d11, d3d10 and d3d9 through OpenGL-based wined3d rather than Vulkan-based DXVK. Usually slower; a fallback where DXVK fails.
Proton-DeckDisplayValve Proton Added Jul 9, 2026 Last checked Sep 13, 2026 Also documented for this game on ProtonDB · checked Sep 27, 2026Safe -
WINE_FULLSCREEN_FSR=1 %command%CopyUpscale with AMD FidelityFX Super Resolution (FSR) through GE-Proton's fullscreen hack, in Vulkan games (DXVK and VKD3D-Proton included)Proton-DeckDisplay -
WINEDLLOVERRIDES=winedbg.exe=d %command%CopySet the override type and load order for DLLs — native Windows (n) or Wine builtin (b)Proton-Deck -
WINEFSYNC_SPINCOUNT=2000 %command%CopyHow many times fsync retries a contended object before waiting on it (default 100), in Proton 5.0-era WineProton-DeckSafe -
WINEFSYNC=1 %command%CopyTurn on futex-based synchronization (fsync) in Wine builds that implement itProton-Deck -
gamemoderun %command%CopyRun the game under Feral GameMode (Linux)- Effect
- Applies temporary host optimisations (CPU governor, I/O and process priority) for the game's lifetime, then restores them on exit. GameMode runs the game, so %command% is what it runs.
Proton-DeckFeral GameMode Added Jun 29, 2026 Last checked Sep 24, 2026 Also documented for this game on ProtonDB · checked Nov 9, 2026Safe -
mangohud %command%CopyShow the MangoHud performance overlay (Linux)- Effect
- Draws FPS, frame timing and CPU/GPU load over Vulkan and OpenGL games. MangoHud runs the game, so %command% is what it runs.
Proton-Deck
How to apply a launch option on Steam
- Open Steam and go to your Library.
- Right-click the game and choose Properties.
- On the General tab, find the Launch Options field.
- Type or paste the option (e.g.
-windowed) into the field. To use several at once, separate them with spaces (e.g.-windowed -novid). - Close Properties. Steam saves automatically, and the option applies next time you launch the game.
To remove one, reopen the same field and delete the text. Options are game-specific; an option that helps one game may do nothing (or misbehave) in another.
Worth knowing: a launch option can break a game's rendering, reset local settings, or trip anti-cheat in multiplayer. Read the description first, add one at a time, and treat anything rated above Safe as a deliberate experiment.
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