FastFlags Manager

Configure Roblox performance settings • 81+ flags available

Low Risk
0 flags selected
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Installation Guide
  1. 1. Download the JSON file
  2. 2. Press Win+R and type:
    %LocalAppData%\Roblox\Versions\
  3. 3. Find the latest version folder (version-xxx)
  4. 4. Create "ClientSettings" folder if it doesn't exist
  5. 5. Place JSON file as "ClientAppSettings.json"
  6. 6. Restart Roblox completely
DFIntTaskSchedulerTargetFps
Low Risk
FPS

Target framerate (Higher = More FPS). Use with FPS unlocker flags

FFlagGameBasicSettingsFramerateCap5
Low Risk
FPS

Removes FPS cap limit (Part 1 of FPS unlocker)

FFlagTaskSchedulerLimitTargetFpsTo2402
Low Risk
FPS

Removes 240 FPS limit (Part 2 of FPS unlocker)

DFFlagDebugRenderForceTechnologyVoxel
Low Risk
Lighting

Force Voxel lighting (Phase 1) - Oldest, best performance

FFlagDebugForceFutureIsBrightPhase2
Medium Risk
Lighting

Force Shadowmap lighting (Phase 2)

FFlagDebugForceFutureIsBrightPhase3
High Risk
Lighting

Force Future lighting (Phase 3) - Best quality, lower FPS

FFlagNewLightAttenuation
Low Risk
Lighting

Improved lighting attenuation

FFlagFastGPULightCulling3
Low Risk
Lighting

GPU light culling for better performance

FFlagDebugGraphicsPreferVulkan
Medium Risk
Rendering

Use Vulkan rendering (Modern GPUs, best performance)

FFlagDebugGraphicsDisableDirect3D11
Medium Risk
Rendering

Disable DirectX 11 (Required for Vulkan/OpenGL)

FFlagDebugGraphicsPreferOpenGL
Medium Risk
Rendering

Use OpenGL rendering

FFlagDebugGraphicsPreferD3D11
Low Risk
Rendering

Prefer DirectX 11 (Default for Windows)

FFlagDebugGraphicsPreferD3D11FL10
Low Risk
Rendering

Use DirectX 10 (Older systems)

FFlagDebugGraphicsPreferMetal
Low Risk
Rendering

Use Metal rendering (MacOS only)

DFIntDebugFRMQualityLevelOverride
Low Risk
Graphics

Graphics quality override (1=Lowest, 21=Highest)

FIntRomarkStartWithGraphicQualityLevel
Low Risk
Graphics

Starting graphics quality level

DFFlagTextureQualityOverrideEnabled
Low Risk
Graphics

Enable texture quality override

DFIntTextureQualityOverride
Low Risk
Graphics

Texture quality (1=Low, 3=High)

DFIntPerformanceControlTextureQualityBestUtility
Low Risk
Graphics

Lower quality textures (-1 for lowest)

FIntRenderShadowIntensity
Low Risk
Shadows

Shadow intensity (0=Off, 255=Max)

FFlagRenderShadowIntensity
Low Risk
Shadows

Shadow rendering (0=Off)

FIntRenderShadowmapBias
Low Risk
Shadows

Shadowmap bias (Higher = Less shadow artifacts)

DFFlagDebugPauseVoxelizer
Low Risk
Shadows

Disable baked shadows

FFlagDisablePostFx
Low Risk
PostFX

Disable all post-processing effects (MAJOR FPS BOOST)

FFlagDebugRenderingSetDeterministic
Low Risk
Terrain

Smoother terrain rendering

FIntTerrainArraySliceSize
Low Risk
Terrain

Terrain texture quality (4=Low, 64=High)

FIntFRMMinGrassDistance
Low Risk
Terrain

Minimum grass render distance (0=No grass)

FIntFRMMaxGrassDistance
Low Risk
Terrain

Maximum grass render distance

FIntRenderGrassDetailStrands
Low Risk
Terrain

Grass detail level

FIntRenderGrassHeightScaler
Low Risk
Terrain

Grass height scale

FFlagDebugCheckRenderThreading
Low Risk
Threading

Enable render threading (Part 1)

FFlagRenderDebugCheckThreading2
Low Risk
Threading

Enable render threading (Part 2)

FIntRuntimeMaxNumOfThreads
Medium Risk
Threading

Maximum CPU threads

FIntTaskSchedulerThreadMin
Low Risk
Threading

Minimum task scheduler threads

DFIntTaskSchedulerThreadCount
Medium Risk
Threading

Task scheduler thread count

DFIntDebugRestrictGCDistance
Medium Risk
Memory

Garbage collection frequency (Lower = More frequent cleanup)

FFlagDebugEnableStreamingByDefault
Medium Risk
Memory

Enable memory streaming for large games

DFIntTextureCompositorActiveJobs
Low Risk
Memory

Texture compositor jobs (0=Disable avatar textures)

DFIntMaxFrameBufferSize
Medium Risk
Memory

Frame buffer size (Lower = Better performance, 0=White screen)

DFIntConnectionMTUSize
Low Risk
Network

Network packet size (1200-1500, Higher = Better for stable connections)

FFlagDebugEnableNewNetworkingStack
Medium Risk
Network

Use new networking system (May reduce lag)

DFIntDataSenderRate
High Risk
Network

Data sender rate (-1=Disable game loading)

DFIntS2PhysicsSenderRate
High Risk
Network

Physics sender rate (Lower = Desync, 1=Invisible)

FIntRakNetResendBufferArrayLength
Low Risk
Network

Network buffer size

DFIntCSGLevelOfDetailSwitchingDistance
Low Risk
LOD

LOD switching distance (0=Always low quality)

DFIntCSGLevelOfDetailSwitchingDistanceL12
Low Risk
LOD

LOD level 1-2 switch distance

DFIntCSGLevelOfDetailSwitchingDistanceL23
Low Risk
LOD

LOD level 2-3 switch distance

DFIntCSGLevelOfDetailSwitchingDistanceL34
Low Risk
LOD

LOD level 3-4 switch distance

FFlagGlobalWindRendering
Low Risk
Effects

Disable wind rendering

FFlagGlobalWindActivated
Low Risk
Effects

Disable wind activation

FFlagUserShowGuiHideToggles
Low Risk
UI

Show GUI hide toggles

FFlagDebugAdornsDisabled
Low Risk
UI

Disable GUI adorns

FFlagDebugDontRenderUI
High Risk
UI

Don't render any UI

FFlagDebugDontRenderScreenGui
Medium Risk
UI

Don't render ScreenGuis

FFlagEnableInGameMenuChrome
Low Risk
UI

Enable Chrome UI top bar

FIntRobloxGuiBlurIntensity
Low Risk
UI

Blur intensity (0=No blur)

FFlagDebugDisplayFPS
Low Risk
UI

Display FPS counter

FFlagDebugAudioUseNewAudioApi
Medium Risk
Audio

Use new audio API

DFIntAudioDeviceSampleRate
Low Risk
Audio

Audio sample rate

DFIntMaxLoadableAudioChannelCount
Low Risk
Audio

Max audio channels (1=Limit audios)

DFFlagPhysicsSkipNonRealTimeHumanoidForceCalc2
High Risk
Physics

Physics optimization (Disable for desync)

DFIntGameNetPVHeaderTranslationZeroCutoffExponent
High Risk
Physics

Invisible exploit (10=Become invisible)

FFlagDebugSimDefaultPrimalSolver
High Risk
Physics

Alternative physics solver (Part of noclip)

DFIntDebugSimPrimalStiffness
High Risk
Physics

Physics stiffness (0=Noclip)

DFFlagAssemblyExtentsExpansionStudHundredth
High Risk
Physics

Noclip adjustment (-50=Noclip without falling)

FIntCameraMaxZoomDistance
Low Risk
Camera

Maximum zoom out distance

FIntCameraFarZPlane
Medium Risk
Camera

Camera far plane (1=X-ray effect)

DFFlagDebugDisableTimeoutDisconnect
Low Risk
Anti-Kick

Anti no wifi kick

FFlagReconnectDisabled
Low Risk
Anti-Kick

Disable reconnect button

FFlagDebugDisableTelemetryEphemeralCounter
Low Risk
Telemetry

Disable telemetry counter

FFlagDebugDisableTelemetryEphemeralStat
Low Risk
Telemetry

Disable telemetry stats

FFlagDebugDisableTelemetryEventIngest
Low Risk
Telemetry

Disable telemetry events

FFlagDebugDisableTelemetryPoint
Low Risk
Telemetry

Disable telemetry points

FFlagDebugDisableTelemetryV2Counter
Low Risk
Telemetry

Disable telemetry V2 counter

FFlagDebugDisableTelemetryV2Event
Low Risk
Telemetry

Disable telemetry V2 events

FFlagDebugDisableTelemetryV2Stat
Low Risk
Telemetry

Disable telemetry V2 stats

FIntDebugForceMSAASamples
Low Risk
MSAA

Force MSAA samples (0=Off, 4=Good, 8=High, 16=Max)

FFlagAdServiceEnabled
Low Risk
Misc

Disable in-game advertisements

DFFlagDisableDPIScale
Low Risk
Misc

Preserve rendering quality with display scaling

FFlagDebugSkyGray
Low Risk
Misc

Gray sky (Default skybox only)

FIntScrollWheelDeltaAmount
Low Risk
Misc

Scroll wheel speed

base44
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