Updated Roblox Fast Flags

Updated Roblox Fast Flags | Bloxstrap Fast Falgs 2025

Roblox players are always looking for ways to boost FPS and reduce lag, especially on low-end PCs. One of the best methods in 2025 is by using Bloxstrap Fast Flags. These updated settings allow you to unlock smoother gameplay, faster loading, and an overall better Roblox experience.

{
  "FFlagShaderLightingRefactor": "True",
  "FFlagDebugDeterministicParticles": "False",
  "DFIntGraphicsOptimizationModeMaxFrameTimeTargetMs": "20",
  "FFlagDebugSSAOForce": "False",
  "DFFlagEnableMeshPreloading2": "True",
  "FIntTextureCompositorLowResFactor": "4",
  "FFlagAXAdaptiveScrollingItemResetFix2": "True",
  "FFlagTopBarUseNewBadge": "False",
  "FFlagDebugDisableTelemetryV2Counter": "True",
  "FFlagAXAdaptiveScrollingSnapItemEditor": "True",
  "DFIntMacWebViewTelemetryThrottleHundredthsPercent": "0",
  "FIntTerrainOTAMaxTextureSize": "4",
  "FFlagEnablePreferredTextSizeScalePerLayerCollector": "True",
  "DFIntTimestepArbiterThresholdCFLThou": "300",
  "FFlagRenderLegacyShadowsQualityRefactor": "True",
  "DFFlagOpenCloudV1CreateUserNotificationAsync": "False",
  "DFFlagAudioToggleVolumetricPanning": "True",
  "FFlagAXPortraitSplitAdaptiveScrollingFix2": "True",
  "FFlagDebugDisableTelemetryEphemeralStat": "True",
  "DFIntHttpParallelLimit_RequestExperienceNotificationService": "0",
  "FIntOcclusionCullingBetaFeatureRolloutPercent": "100",
  "DFFlagDebugPerfMode": "True",
  "FFlagPreOptimizeNoCollisionPrimitive": "True",
  "FIntRenderGrassDetailStrands": "0",
  "FIntRuntimeMaxNumOfThreads": "2400",
  "FIntStudioResendDisconnectNotificationInterval": "0",
  "FFlagDebugDisableTelemetryV2Event": "True",
  "FFlagPreferredTextSizeStyleFixEventDescriptionExperienceTile": "True",
  "DFIntMicroProfilerDpiScaleOverride": "100",
  "FFlagFixParticleAttachmentCulling": "False",
  "DFIntAnimationLodFacsVisibilityDenominator": "0",
  "FIntTerrainArraySliceSize": "64",
  "FIntRenderLocalLightUpdatesMax": "1",
  "FFlagDeveloperToastNotificationsEnabled": "False",
  "FIntEnableCullableScene2HundredthPercent3": "100",
  "FIntFixForBulkPresenceNotifications": "0",
  "FFlagSettingsHubIndependentBackgroundVisibility": "True",
  "FFlagSelfViewFixes": "False",
  "FFlagSquadToastNotificationsEnabled": "False",
  "FFlagEnableCullableScene2OptimizeStep": "True",
  "FFlagCAP1209EnableDataSharingUI4": "False",
  "FFlagNewOptimizeNoCollisionPrimitiveInMidphase637": "True",
  "DFFlagTeleportPreloadingMetrics5": "True",
  "FFlagDebugGraphicsPreferD3D11": "True",
  "FFlagChatTranslationEnableSystemMessage": "False",
  "DFFlagAdsPreloadInteractivityAssets": "True",
  "FFlagHandleAltEnterFullscreenManually": "False",
  "FFlagDontRerenderForBadTexture": "True",
  "FFlagEnablePreferredTextSizeSettingInMenus2": "True",
  "DFFlagUseVisBugChecks": "True",
  "FFlagDebugEnableVRFTUXExperienceInStudio": "True",
  "DFFlagJointIrregularityOptimization": "True",
  "FFlagPreloadAllFonts": "True",
  "FFlagRenderCBRefactor2": "True",
  "FFlagAXAdaptiveScrollingImprovementIXPEnabled": "True",
  "DFFlagOptimizeNoCollisionPrimitiveInMidphaseCrash": "True",
  "FIntRenderMaxShadowAtlasUsageBeforeDownscale": "1",
  "FIntSelfViewTooltipLifetime": "0",
  "FFlagOcclusionCullingBetaFeature": "True",
  "FFlagLuaAppsEnableParentalControlsTab": "False",
  "DFFlagOptimizeClusterCacheAlloc": "True",
  "FFlagFastGPULightCulling3": "True",
  "DFFlagSimRefactorCollisionGeometry2": "True",
  "DFIntMaxFrameBufferSize": "4",
  "FFlagDisableFeedbackSoothsayerCheck": "False",
  "FIntFRMMaxGrassDistance": "0",
  "FFlagInExperienceUpsellSelfViewFix": "False",
  "DFIntGraphicsOptimizationModeMinFrameTimeTargetMs": "25",
  "FFlagVoiceBetaBadge": "False",
  "FFlagAssetPreloadingIXP": "True",
  "FFlagWindowsReportAbuseNotification": "False",
  "FFlagPreloadMinimalFonts": "True",
  "FFlagSelfViewRemoveVPFWhenClosed": "False",
  "DFFlagOptimizeInstanceQueries": "True",
  "FFlagFixEmotesMenuVR": "True",
  "FFlagPreferredTextSizeSettingBetaFeature": "True",
  "FFlagEnablePreferredTextSizeGuiService": "True",
  "FFlagVRMouseMoveOptimization": "True",
  "FIntGrassMovementReducedMotionFactor": "0",
  "FFlagUserShowGuiHideToggles": "True",
  "FFlagEnableChildrenLockFromLua2": "False",
  "FFlagEnablePreferredTextSizeStyleFixesInAppShell4": "True",
  "FFlagLuaAppGamesPagePreloadingDisabled": "False",
  "FStringVoiceBetaBadgeLearnMoreLink": "null",
  "FFlagSignalRNotificationManagerMaybeStart": "False",
  "FFlagNotificationButtonTypeVariantMappingEmphasis": "False",
  "FFlagBetaBadgeLearnMoreLinkFormview": "False",
  "DFFlagSimSkipVoxelCDECMerge": "True",
  "FIntFRMMinGrassDistance": "0",
  "FFlagEnableInGameMenuChromeABTest4": "True",
  "DFFlagUnifyLegacyJointGeometry": "True",
  "FFlagRenderFixFog": "True",
  "FFlagSelfViewAvoidErrorOnWrongFaceControlsParenting": "False",
  "FIntDebugFRMOptionalMSAALevelOverride": "0",
  "FIntVRTouchControllerTransparency": "0",
  "DFIntConnectionMTUSize": "1396",
  "DFFlagSimOptimizeSetSize": "True",
  "DFFlagEnableExperienceNotificationOptInPrompt": "False",
  "DFIntTeleportClientAssetPreloadingHundredthsPercentage2": "100000",
  "DFFlagAssetPreloadingUrlVersionEnabled2": "True",
  "FStringInExperienceNotificationsLayer": "",
  "FFlagDebugSelfViewPerfBenchmark": "False",
  "FFlagSimEnableDCD16": "True",
  "FIntUnifiedLightingBlendZone": "1",
  "DFIntNumAssetsMaxToPreload": "2147483647",
  "FFlagSelfViewCameraDefaultButtonInViewPort": "False",
  "FFlagTaskSchedulerLimitTargetFpsTo2402": "False",
  "FFlagRenderLightGridEfficientTextureAtlasUpdate": "True",
  "FFlagUserFixLoadAnimationError": "True",
  "FFlagVRLaserPointerOptimization": "True",
  "FFlagDebugStudioForceSystemDeprecationNotification": "False",
  "DFIntRakNetMtuValue3InBytes": "1100",
  "FFlagViewCollisionFadeToBlackInVR": "False",
  "FFlagDisableChromeV3StaticSelfView": "False",
  "FFlagUpdateHTTPCookieStorageFromWKWebView": "False",
  "FFlagDebugDisableTelemetryV2Stat": "True",
  "FIntRobloxGuiBlurIntensity": "0",
  "FFlagFixChunkLightingUpdate2": "True",
  "FFlagEnablePreferredTextSizeStyleFixesAddFriends": "True",
  "FFlagEngineAPICloudProcessingUseNotificationClient": "False",
  "FFlagSelfViewHumanoidNilCheck": "False",
  "FFlagFixExitDialogBlockVRView": "True",
  "FFlagUserEnableCameraToggleNotification": "False",
  "FFlagRenderTestEnableDistanceCulling": "True",
  "FFlagEnableIOSWebViewCookieSyncFix": "False",
}

See Bloxstrap fast flags list: https://bloxstrapper.com/fast-flags-list/

What Are Fast Flags?

Fast Flags are hidden Roblox configuration settings that control how the game engine works. By tweaking them through Bloxstrap, players can reduce unnecessary effects, optimize graphics, and improve frame rates without installing heavy mods.

How to Use Bloxstrap Fast Flags

1. Download & Install Bloxstrap – Get the launcher from the FPS Boost Pack and install it like any normal program.
2. Open Settings – Search Bloxstrap in your Windows bar, then go to Configure Settings → Engine Fast Flag Settings.
3. Enable Fast Flags – Click I know what I’m doing, then add new settings.
4. Apply Presets – Copy the text from the preset file (Latest Fast Flag Graphics) and paste it inside the Fast Flag section.
5. Save & Apply – Confirm changes and close Bloxstrap.

Now, when you launch Roblox, you’ll notice higher FPS, smoother gameplay, and reduced lag . If your PC is very weak, you can choose lighter presets for even better stability.

Final Thoughts

The updated Roblox Fast Flags in 2025 make a huge difference, especially for competitive players who need smoother frames. With just a few steps, you can optimize Roblox and enjoy a much better gaming experience.