JS Performance Pack for Minecraft 26.3
A lightweight Fabric optimization modpack for Minecraft that boosts FPS, improves chunk loading, reduces lag, and stays close to the vanilla experience.
- views
- 45 views
- Updated
- Updated 28.10.2026
- 1.21.11 — 26.3
Fabric- Client and server
About Modpack
JS Performance Pack is a lightweight Fabric optimization modpack focused on improving Minecraft's performance while preserving the vanilla experience. It combines a carefully selected set of optimization mods to increase FPS, reduce stuttering, improve chunk loading, and lower memory usage without changing gameplay.
The pack is designed to work well on both low-end and high-end systems and is suitable for both singleplayer and multiplayer.
Credits
This modpack would not be possible without the work of the developers behind the included open-source mods. Full credit goes to their respective authors.
How to install JS Performance Pack
With Millida Launcher
Install Millida Launcher
The launcher is free: download it at millida.net/launcher and sign in with any nickname.
Click “Install” on this page
The launcher opens and installs the modpack for Minecraft 1.21.11–26.3 on Fabric automatically.
Launch the game
A profile with it appears in the launcher: click “Play”.
Manually
Download the modpack archive
In the version list above, pick the file JS Performance Pack [Fabric 26.3].mrpack (23 KB).
Import it into a launcher
A launcher that supports modpacks (Millida Launcher, Prism) takes the archive via “Add modpack”, then “From file”. No need to unpack it yourself.
Allocate memory
Modpacks need more memory than the plain game: set 4–6 GB in the profile settings.
On a server
Use the “To server” button
On Millida Hosting, the button at the top of the page uploads the file to your server and restarts it for you.
Invite friends: they install the same modpack
To join the server, every player needs the same modpack version.
Versions
With dependencies
| Minecraft | Loader | File | Date | Actions |
|---|---|---|---|---|
| 26.3 | Fabric | 26.323.4 KB | ||
| 26.2 | Fabric | 26.221.5 KB | — | |
| 26.1 | Fabric | 26.121.8 KB | — | |
| 1.21.11 | Fabric | 1.21.1127 KB | — |
What it needs to run
- Continuityalready included
- YetAnotherConfigLib (YACL)already included
- More Cullingalready included
- ImmediatelyFastalready included
- Fast IP Pingalready included
- Cloth Config APIalready included
- Sodiumalready included
- Reese's Sodium Optionsalready included
- Cubes Without Bordersalready included
- Fabric Language Kotlinalready included
- Dynamic FPSalready included
- Entity Cullingalready included
- Fabric APIalready included
- Sodium Extraalready included
- ModernFix-mVUSalready included
- Iris Shadersalready included
- Text Placeholder APIalready included
- Kryptonalready included
- BadOptimizationsalready included
- Dependencyalready included
- Mod Menualready included
- FerriteCorealready included
- Zoomify (Zoom)already included
- FastQuitalready included
- Controllingalready included
FAQ
Which Minecraft versions does JS Performance Pack work on?
There are files for 26.3, 26.2, 26.1, 1.21.11. The newest is 26.3.
Is JS Performance Pack for Forge or Fabric?
Only for Fabric: 1.21.11–26.3.
Which mods are in the JS Performance Pack modpack?
Mods in the modpack include Continuity, YetAnotherConfigLib (YACL), More Culling, ImmediatelyFast, Fast IP Ping, Cloth Config API, Sodium, Reese's Sodium Options and 17 more.
How do I download JS Performance Pack?
With Millida Launcher: it installs JS Performance Pack into a modpack by itself, for the right game version and loader. The launcher is free.
Reviews
Be the first to rate JS Performance Pack
