Bloxstrap Fast Flags – Max Roblox FPS & Reduce Lag

Bloxstrap Fast Flags settings are hidden switches inside the Roblox game engine that few people know about. Only the developers use these controls to adjust the game’s performance and test out new features.
But the best part is that if you’re using Bloxstrap, you can adjust the Bloxstrap Fast Flags settings even as a user. If there’s any feature that you don’t like, the loading of the game, low FPS or low graphic quality, you could adjust them the way you want with Fast Flags settings. So, how to set the Fast Flag settings of Roblox with Bloxstrap? Let’s learn that.

Bloxstrap FastFlags Explained

What Are Bloxstrap Fast Flags?

To control the game and make changes to its performance, test out or remove any feature without launching a full update, Roblox has the Fast Flag settings. In the official Roblox launcher, only the developers of Roblox have access to these settings. But with Bloxstrap, you could also adjust these settings. 

Whether there’s an annoying loading screen and features, Low FPS, or low performance, you can adjust them with Blostrap’s Fast Flags settings. Though the Fast Flag settings are mostly loaded online, Bloxstrap lets you override them offline manually, giving you complete control over how the game works.

Complete Bloxstrap Fast Flags List

This comprehensive collection contains all available Bloxstrap Fast Flags organized by category. These flags allow you to customize and optimize your Roblox experience, from graphics settings to performance enhancements.

How to use:

  1. Click the “Copy” button next to any flag you want to use
  2. The flag will be copied in proper JSON format ready for Bloxstrap
  3. Open Bloxstrap Menu → Engine Settings → Fast Flags Editor → Import JSON
  4. Paste the copied JSON and click Save

Each flag is formatted correctly for direct import into Bloxstrap without any manual editing needed. Individual flags can be used alone, or you can combine multiple flags by copying from different cards.

For best performance, try the “FPS Boost Combination” or “Low Latency Combination” presets, which include multiple optimized flags working together.

How To Use Bloxstrap Fast Flags Video Tutorial

Bloxstrap Fast Flags for 2025

FPS Unlocker
Disable Shadows
Low Texture Quality
Disable PostFX
Disable Grass Rendering
Reduce Terrain Effects
Disable Wind
Vulkan Rendering
DirectX 11
Lighting Attenuation
Force LOD on Meshes
Texture Transparency
Reduce Network Interpolation
Optimize Physics Simulation
Disable Network Extrapolation
Faster Network Replication
Reduce Packet Overhead
Display FPS
Preserve Rendering Quality
Disable Telemetry
Disable Immersive Ads
Faster UI Rendering
FPS Boost Combination
Low Ping Combination

List Of The Bloxstrap Preset Fast Flags

Don’t try to create your own Fast Flags codes, as you may make mistakes and mess up the settings. This is a List of all the Bloxstrap Preset Fast Flags created for the most useful settings that help you improve your gaming.

Escape Menu Version (FFlagDisableNewIGMinDUA, FFlagEnableInGameMenuControls)
Allows switching between different versions of the in-game escape menu.
Framerate Limit (DFIntTaskSchedulerTargetFps)
Adjusts the FPS cap beyond Roblox’s default options.
Exclusive Fullscreen (FFlagHandleAltEnterFullscreenManually)
Enables exclusive fullscreen mode with Alt + Enter instead of F11.
GUI Hiding (DFIntCanHideGuiGroupId)
Provides shortcuts to hide GUI elements in-game.

Should You Adjust The Bloxsrap Fast Flags Settings?

Bloxsrap FastFlag Settings

The Bloxstrap Fast Flag settings are highly sensitive and must be handled cautiously. The official Roblox kept its access to only developers and engineers, as adjusting it wrong could mess up the whole game. If you don’t know what you’re doing and make changes to the Roblox Fast Flags settings, you could run into issues, slow performance, crashes, or even stop it from running altogether.

Therefore, if you’re not aware of how the Roblox Fast Flags settings work or what code you’re putting in, you should avoid adjusting them. However, you could import the Bloxstrap preset Fast Flags, as you don’t need to build them yourself; just toggle and improve the gaming.

How To Adjust Bloxstrap Fast Flags Settings?

This is how you can make tweaks to Bloxstrap Fast Flags settings to improve your Roblox gaming experience.

  • Open Bloxstrap and then click on the “Settings” option.
  • Then, click on “Fast Flags,” which will open the available Bloxstrap presets customization flags that you can easily use.

Enable Preset Fast Flags:

If you want to use the Bloxstrap presets Flags, this is how you can do that.

  • Go through the whole list of the preset Fast Flags provided by the Bloxstrap to select the one that you want to use.
  • Whichever you like, simply toggle the switch next to each preset to enable or disable it. This is the easiest way of modifying the Fast Flags or Roblox with Bloxstrap.

Customise Fast Flags

Customising the Roblox Fast Flags using the Bloxstrap is also possible, but don’t try it if you’re not an advanced user.  Follow these steps:

  • For advanced customisation, click on the ‘Edit’ or ‘Advanced’ button within the Fast Flags section.​
  • Manually adjust specific Fast Flag values to fine-tune settings. 
  • After making adjustments, click ‘Apply’ or ‘Save’ to confirm your settings.​
  • To apply the new configurations, close any running instances of Roblox and relaunch the game.

FAQS

Just open Bloxstrap, head over to settings, and find the Fast Flags section where you can tweak different options.

They’re hidden settings inside Roblox that let you control performance, graphics, and other game behaviors to optimise how it runs.

Just tweak the Fast Flag values in Bloxstrap’s settings, save your changes, and restart Roblox to make them take effect.

Final Words

Bloxstrap Fast Flags are the secret settings of Roblox that the developers and engineers use to test out a new feature, fix any bugs, improve performance, and handle crashes without launching a full update. But with the Bloxstrap, you could modify the Roblox Fast Flag settings to lower the Roblox PING, increase the FPS, improve the graphics and also the performance. You could toggle the Bloxstrap preset Fast Flags, the easiest method to alter the Roblox Fast Flags settings. 
However, if you’re an advanced user and understand tweaking the codes of the Fast Flags, you can also customise the settings by changing the values or using the preset list of the Roblox Bloxstrap Fast Flags we provided above. Just be cautious about modification, as doing it wrong will lead to crashes, low performance, lost progress, and even a complete game stop.