Ultralight

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Performance Comparison

Metric	Vanilla	Ultralight	Improvement
Min Frametime	6 ms	4 ms	~1.5× better
Max Frametime	107 ms	54 ms	~1.98× better
Avg FPS	134	277	~2.07× higher

Tested under simulated gameplay at 16 render distance.

Ultralight is best used on client.

If you're looking to improve your server's performance, try out Lilypad!

Want to play Minecraft with a new little spin? Try Wildflower!

Updating the Modpack & Tags

Before a new Ultralight update gets uploaded, it undergoes simulated gameplay testing to assess performance under normal conditions. If the update meets our internal performance targets, it will be released with an “A” in the version name. If it fails to meet those targets, it will be released with an “F” in the version name.

Tags

• A — Stable and user-ready; no major issues.
• B — Acceptable but below optimal performance targets (FPS and/or frametime slightly off).
• F — Performance issues; FPS and/or frametime significantly below target.

OS Compatibility

OS	Compatible
Windows	✅
MacOS (ARM)	✅

Tested on Apple M1. Measurements taken on Windows.

Socials

We have a Discord server!