FastFlags (Client)

Note

As of September 2025, Roblox has rolled out a whitelist system for all client flags. What this essentially means is that you will be able to use only a few specific whitelisted flags. Read more on the Devforum.

Fishstrap offers you a preset selection of FastFlags that Roblox has whitelisted for everyone to use. These include:

• Mesh detail (Quality of ingame models)
• Anti-Aliasing quality (MSAA)
• Disabling DPI scaling (Better image quality)
• FRM Quality Override (Force in-game graphics quality)
• Rendering engine (DirectX11, Vulkan, Opengl)
• Texture quality

On top of this, Fishstrap also offers a FastFlag editor. With the editor, you may edit FastFlags that get applied to your client. However, only whitelisted Flags will be applied to your client. You may view the current list of whitelisted flags on the Devforum.

Adding FastFlags

Note

Please note that values for FastFlags should match their data types. Read more about it here

To add a new FastFlag or to import a JSON with your FastFlags, click on the “Add new” button inside the editor. You will be presented with two options:

If you’re adding a single Flag:

1. Add in the name of the Flag in the “Name” field. (eg. “DFFlagJumpScaresP2”)
2. Add in the value of the Flag in the “Value” field. (eg. “True”)
3. Click on “OK”. The entered FastFlag will now be added to your list.

You may also edit preset flags pressing on the “Show preset flags” button.

To edit FastFlags you have added, double click on the entry you want to modify.

If you’re importing a JSON list:

1. Click on “Add new” in the Fast Flag editor.
2. Select “Import JSON”.
3. Paste your correctly formatted JSON.

You may also import JSON’s from a file by using the “Import from file” button.