
Modrinth · Minecraft mod
Bura
Bura is an alpha Fabric performance mod that reduces lag spikes and improves FPS stability by optimizing chunk compilation, upload scheduling, and visibility culling in singleplayer.
Quick answer
Which Bura release should I use?
Bura 0.2.0 targets 1.21.11 with Fabric. Installation on the client is optional. Installation on the dedicated server is optional. No extra mods listed for this file.
Where it goes
Is Bura required on the client, server, or both?
Installation on the client is optional. Installation on the dedicated server is optional.
The source marks this as usable on both the client and server.
What else does Bura 0.2.0 need?
0.2.0. Change the file and its required mods may change too.
This file does not list any required mods. Do not add a library just because a different file uses it.
This file does not list any required or optional mods.
Before you install it
Add Bura without breaking your instance.
Built for Bura 0.2.0. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use 0.2.0. It targets 1.21.11 with Fabric; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
This file does not list any required mods. Do not add a library just because a different file uses it.
- 03
Put it on the correct side
Installation on the client is optional. Installation on the dedicated server is optional.
- 04
Pick the file you checked
Use the “Get this file” button beside 0.2.0. It opens that exact file at the source.
About this project
What does Bura add?
Bura
Version: Alpha 0.2.0
Minecraft: 1.21.11
Loader: Fabric
Notice:
Bura Beta is currently planned to release in mid september. Thank you to everyone for your support and feedback throughout development!
Bura is an experimental performance mod focused on improving FPS consistency and reducing rendering-related CPU spikes. It currently targets chunk scheduling, upload pacing, and visibility work, with a strong focus on lower-end and CPU-limited systems.
Performance Snapshot
Tested on Intel Core i3-10100F @ 3.60GHz against Vanilla Fabric under the same settings and world conditions.

| Metric | Vanilla Fabric | Bura Alpha 0.2.0 | Change |
|---|---|---|---|
| Peak FPS | 140 | 297 | +112% |
| Average Frame Time | 7 ms | 4 ms | -42% |
| CPU Usage (Process) | 51.6% | 25.4% | -50% |
| 95th Percentile MSPT | 2.96 ms | 2.28 ms | -23% |
What Bura Optimizes
Chunk compilation scheduling
Bura reduces frame spikes caused by chunk rebuild bursts by spreading expensive work more intelligently.
Chunk upload pacing
GPU upload work is distributed across frames to avoid sudden stutter from large render updates.
Visibility culling
Bura reduces unnecessary rendering work by avoiding repeated processing for geometry that is not visible.
Compatibility
Bura is designed to work alongside other optimization mods and focuses primarily on frame pacing and workload scheduling.
Tested combinations:
- Sodium
- Iris
- ImmediatelyFast
- Entity Culling
- Lithium
- FerriteCore
Known Limitations
- Aggressive culling may still cause occasional chunk flicker or ghosting.
- Alpha build: behavior may change between versions.
- Some particle or rendering mods may require compatibility fixes.
Roadmap
- Reduce memory usage and heap allocation rate to lower gc stutter
- Improve chunk loading behavior at high movement speeds
- Reduce flicker from aggressive visibility culling
- Expand compatibility with more rendering mods
Project description from Modrinth.
Pick your setup
Bura by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
Check the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Bura versions and loaders
0.2.0
bura-0.2.0.jar
9 Apr 2026
0.1.0
bura-0.1.0.jar
15 Feb 2026
Looking for an older file? The official Modrinth project page is in Resources.