Roblox FPS Boost — Free Windows Tool for More Frames

Why it works

Why BloxFrames works where manual tweaking fails.

Roblox uses the same engine for everyone, but ships with conservative defaults—especially on low-end PCs.

FastFlags done rightBloxFrames writes to Roblox's own ClientAppSettings.json file using the exact same method Bloxstrap and the FastFlag community use. Every flag is cross-checked and safe. You're not injecting code; you're changing settings Roblox already knows about.
Four presets, zero guessingStart with High FPS for low-end machines or Ultra FPS if you want every last frame. Each preset tunes the render backend (Vulkan or Direct3D11), lighting model, and visual effects for its target hardware. No manual config needed.
CPU priority boostBloxFrames sets the running Roblox process to High priority across all cores, which smooths out frame pacing and reduces stutters. It's a small change that makes a real difference on systems with background apps.
Completely reversibleChanged your mind? One click removes every flag BloxFrames added and restores Roblox to default settings. Your own tweaks are left alone. No registry edits, no permanent changes.

Open & safe

BloxFrames at a glance.

Version1.0.0

PlatformWindows 10 and 11, 64-bit

InstallPortable, no installer

LicenseMIT, source on GitHub

PriceFree, no account

LanguageEnglish

Better than manual

How BloxFrames compares to other methods.

Not all FPS boosters are built the same.

	BloxFrames	Manual FastFlag editing
Time to set up	One minute	15+ minutes
Risk of breaking things	None—fully reversible	High—wrong flag ruins settings
Includes cache cleaner	Yes, built in	Manual only
CPU prioritization	Automatic	Not included
Tested presets	Four included	You create your own
Updates & support	Public GitHub repo	You're on your own

What you gain

Real FPS gains on machines that need them most.

BloxFrames applies a curated FastFlag preset that removes expensive visual effects and lifts Roblox's default 60-frame cap. The results are immediate—smoother gameplay on laptops and older PCs that usually struggle with Roblox's default settings.

Ultra FPS presetStrips the game down to bare essentials and removes the frame limiter entirely for maximum throughput.

High FPS (recommended)Balances playability with performance, targeting 360 FPS on hardware that wouldn't hit 60 before.

Cache cleanup includedRemoves logs, temp files, and cached assets, freeing up disk space and reducing memory load.

Quick start

How to boost your Roblox FPS in three steps.

The entire process takes less than a minute.

Download and installGrab the installer, run it, and follow the setup wizard—it takes about 30 seconds.

Pick your presetChoose High FPS if you're on a potato laptop, Ultra FPS if you want maximum frames, or Balanced if your PC is decent.

Click Get More FPSThe tool applies flags, cleans cache, and sets Roblox to high priority instantly.

Launch Roblox and playOpen the game and feel the difference—you'll see the FPS counter jump immediately on the first load.

Your questions

Questions about FPS boosting

Q1
Will this get me banned?
No. BloxFrames only edits ClientAppSettings.json, which is Roblox's own settings file. You're not injecting code or modifying memory—just changing the same flags that Roblox itself uses. The Bloxstrap project uses this exact approach.
Q2
What if I want to go back to default?
Press the Reset Flags button in BloxFrames. Every flag is removed and Roblox returns to its original state. Your personal settings stay intact.
Q3
Which preset should I pick?
Start with High FPS on low-end PCs (recommended). If you want maximum frames and don't care about looks, use Ultra FPS. Balanced is for newer machines that want smooth gameplay with better graphics.
Q4
Does this work on all Roblox versions?
Yes. BloxFrames applies flags to every installed Roblox version on your PC at once, so your settings follow you across games and updates.
Q5
Can I use this with Bloxstrap?
Yes. Both tools edit the same settings file, so they won't conflict. Just avoid setting the same flags twice in Bloxstrap if BloxFrames already set them.
Q6
How much space does it take?
The installer is tiny—under 10 MB. After running, it takes almost no disk space. Cache cleaning actually frees up memory by removing temporary Roblox files.
Q7
Is my data safe?
Yes. BloxFrames has no ads, no telemetry, and no internet connection. It's open source under MIT license, so you can review the code yourself on GitHub.

Roblox FPS Boost for low-end PCs.