You searched for an FPS counter, but what you really need is frame rate that actually matters. RBX FPS Booster lifts Roblox's 60 FPS cap, optimizes your old PC, and lets you see the difference.
Roblox locks itself to 60 frames per second by default. On a weak laptop, the client still burns CPU and GPU trying to hit that target—you just never see smooth gameplay. An FPS counter tells you the number; RBX FPS Booster fixes the problem underneath.
The tool unlocks the frame cap through Roblox's own settings file, wipes the cache that slows startup, and bumps the game to high CPU priority so every core works for you. Pick a preset, hit one button, and you skip the stuttering.
All changes are reversible. If something looks wrong, press Reset and Roblox goes back to stock.
Ultra: For potato laptops. Frame cap removed, bare-bones lighting. Maximum frames, minimum visuals.
High: The default pick. 360 FPS cap, voxel lighting. Big frame-rate jump without breaking older hardware.
Balanced: For everyday machines. 144 FPS cap, shadow mapping. Smooth and still looks like Roblox.
Quality: For stronger PCs. 240 FPS cap, real-time lighting. Full visual fidelity if your rig can handle it.
Switch presets any time. Each one is tuned to a different balance; the Reset button clears the previous preset before applying a new one.
Frame rate climbs because Roblox isn't locked to 60 anymore. On a weak CPU, even jumping to 100+ FPS feels like night and day—less input lag, smoother camera pan, steadier gameplay.
The cache wipe removes old logs and temporary files that pile up over time. First-time load is faster.
High CPU priority means the OS stops juggling the game with background tasks. Frame pacing gets more consistent, especially on older multi-core processors.
Lighting is tuned per preset. Ultra and High use voxel mode (cheap), Balanced uses shadow maps (middle ground), Quality uses the fanciest option. Pick what your PC can handle.
It doesn't inject code into Roblox or modify game files. It only edits the settings file that Roblox reads when it launches—the exact same file that community preset packs modify by hand.
It doesn't add a watermark, show ads, or ask for an account. Close the window and it's gone.
It doesn't run in the background. No tray icon, no service, no telemetry.
It works Windows-only, 64-bit. Mac and Linux users need a different approach.
Yes. Free forever, no trial, no paid tier. MIT licensed and open source.
No. Open the app and the dashboard is right there. Nothing to register.
Yes. Press the Reset button and every change is removed. Roblox goes back to default.
Yes. Supports Windows 10 and Windows 11, both 64-bit.
Press Reset to revert. Then either pick a lower preset (Quality → Balanced → High) or leave it at stock. The changes are safe but not every PC benefits from every setting.
Download RBX FPS Booster now—it takes 30 seconds to install and one click to boost.
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