Official local policy reference
This is the current Roblox allowlist for local FastFlags in ClientAppSettings.json, organized for Luczystrap users. Check an exact name, copy it without a typo, and understand what Roblox will ignore.
01 / Snapshot
Roblox introduced the local allowlist in September 2025. The original post remains the controlling list. I checked the complete thread and later staff replies before publishing this snapshot.
Names in the live announcement.
CSG level-of-detail distances.
Graphics, texture, grass, and display keys.
Reduced-motion grass factor.
Freshness note: Roblox staff said there had been no allowlist changes on January 2 and January 26, 2026. In April, staff said a candidate was vetoed and that the general aim is to remove flags rather than add more. No later staff reply in the thread publishes a replacement list.
02 / Exact registry
Recognition depends on the exact key. The checker distinguishes an exact match, a capitalization mismatch, and a key absent from this snapshot. It checks only this page; nothing is uploaded.
DFIntCSGLevelOfDetailSwitchingDistanceDFIntCSGLevelOfDetailSwitchingDistanceL12DFIntCSGLevelOfDetailSwitchingDistanceL23DFIntCSGLevelOfDetailSwitchingDistanceL34FFlagHandleAltEnterFullscreenManuallyDFFlagTextureQualityOverrideEnabledDFIntTextureQualityOverrideFIntDebugForceMSAASamplesDFFlagDisableDPIScaleFFlagDebugGraphicsPreferD3D11FFlagDebugSkyGrayDFFlagDebugPauseVoxelizerDFIntDebugFRMQualityLevelOverrideFIntFRMMaxGrassDistanceFIntFRMMinGrassDistanceFFlagDebugGraphicsPreferVulkanFFlagDebugGraphicsPreferOpenGLFIntGrassMovementReducedMotionFactorNo keys in this category.
03 / Meaning
The list answers one question: whether the Roblox Player may read a local key from ClientAppSettings.json. It does not certify a preset, value, performance gain, or permanent behavior.
04 / Diagnosis
Use this matrix when a configuration saves but the expected change does not appear. It keeps a policy result separate from a test result.
| What you did | Policy result | What to do next |
|---|---|---|
Exact listed key in ClientAppSettings.json | Eligible for recognition | Validate the JSON value, fully restart Roblox, and repeat one controlled test. Eligibility is not proof of effect. |
| Key absent from the live list | Ignored by Player | Remove it from an active preset or leave it knowing it has no effect. Do not look for a bypass. |
| Listed key, no visible change | Still inconclusive | Check spelling, type, value, Roblox restart, client version, and whether the chosen scene exposes the behavior. |
| Flag changed in memory or through another method | Outside this file policy | Stop. Roblox staff says other methods can lead to consequences, including a ban. |
| Same file opened by Roblox Studio | Allowlist does not apply | Do not use a Studio observation to prove what Roblox Player will accept. |
05 / Change record
The announcement says Roblox may add or remove flags without prior warning. These checkpoints show what staff confirmed, without turning a historical snapshot into a permanent list.
Roblox publishes the 18 local keys and the ignored-key rule.
Staff says non-listed entries in the file carry no consequence; they are ignored.
Staff reports no list changes and work toward a formal update process.
Staff says an internal candidate was rejected and the aim is to remove flags.
The official post still displays the original 18 entries.
06 / Before every setup
A dated reference saves time, but the live Roblox post wins whenever the two differ. Recheck before importing a preset or troubleshooting an old guide.
Use Roblox’s official announcement, not a screenshot or copied list.
Search the full name and confirm it sits under a published category.
Keep the current configuration before changing ClientAppSettings.json.
Save one change, fully restart Player, and reproduce the same scene.
Keep repeatable results only. Roll back anything ineffective or unstable.
07 / FAQ
Short answers for the boundary between a saved local setting, a Roblox-recognized key, and an observable result.
It is Roblox’s list of local FastFlag keys that the Player client may recognize from ClientAppSettings.json. A key that is not on the list is ignored.
The official announcement lists 18 entries: four geometry keys, thirteen rendering keys, and one user-interface key. This snapshot was checked on August 1, 2026.
No. Luczystrap can write a valid local configuration, but Roblox Player decides which entries it recognizes. The ordinary editor cannot make an absent key allowlisted.
Roblox says Player ignores it and it has no effect.
Roblox staff said there are no consequences for putting a non-allowlisted entry in that file because it is ignored. They separately warned that other methods, such as changing flags in memory, can have consequences.
Allowlisted means eligible for recognition, not guaranteed to create a visible effect. The value, client version, hardware, experience, scene, restart state, or current implementation can affect the result.
No. Roblox’s announcement says Roblox Studio is not restricted by the local ClientAppSettings.json allowlist.
Open the live official announcement, find the exact key under its category headings, and treat any dated copy as a snapshot because Roblox says entries may be added or removed without prior warning.
08 / Primary evidence
This page uses Roblox’s announcement and staff replies as policy evidence. Community reports can help reproduce behavior, but they do not change the official list.