Ksyxis

Ksyxis

Speed up your world loading by removing unneeded chunks.

by
7.4M Downloads
fabricforgelegacy-fabricneoforgeornithequiltoptimizationutilityworldgen
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About this Mod

Ksyxis

Speed up your world loading by removing unneeded chunks.

Language

Downloads

Dependencies

  • Fabric, Forge, NeoForge, Quilt, Legacy Fabric, or Ornithe
  • Minecraft (1.8 or newer)
  • Forge 1.8-1.14.4 only: Any Mixin provider, at your choice (such as
    MixinBootstrap,
    MixinBooter,
    UniMixins, or any other)

About

Depending on your game version, Minecraft loads some
chunks when you create your world.
Sometimes, these chunks are always loaded in the background. Either
way, whether these chunks being loaded is a one-time performance slowdown,
or a constant performance penalty, most players don't need any of these
chunks. This mod completely disables unneeded chunks in the game.

Note: Unneeded chunks are sometimes used by farms and
technical contraptions. If you'll need these chunks, you
can always delete the mod later to re-enable these chunks.

Versions

Version Effect Note
1.21.9+ Insignificant A 7x7 area of chunks won't be loaded around the player when they join, and a fake 500ms world creation delay in single-player will be removed.
1.20.5-1.21.8 Low A 5x5 area of spawn chunks won't be loaded constantly in the background.
1.8-1.20.4 Extreme A 21x21 area of spawn chunks won't be loaded constantly in the background.

FAQ

For Players

Q: I need help, have some questions, or have some other feedback.
A: You can join the Discord server.

Q: Where can I download this mod?
A: Modrinth,
CurseForge,
or GitHub Releases.
You can also find unstable builds at
GitHub Actions.
You will need a GitHub account to download these.

Q: Which mod loaders are supported?
A: Fabric, Forge, NeoForge, Quilt, Legacy Fabric, and Ornithe.

Q: Which Minecraft versions are supported?
A: Minecraft versions 1.8 and newer.

Q: Why support so many Minecraft versions?
A: Because I can.

Q: Do I need Fabric API or Quilt Standard Libraries?
A: Not necessarily.

Q: Where are the Fabric, Forge, NeoForge, Quilt, etc. versions?
A: All in the same file.

Q: Is this mod client-side or server-side?
A: This mod works on the server and on the client in singleplayer.
It has no effect on the client when playing multiplayer.

Q: Is this mod stable for use?
A: Should be fine. If it breaks something,
just delete it and your worlds will be fine.

Q: I've found a bug.
A: Report it here. If you are not
sure whether this is a bug or a simple question, you can join the
Discord. Report security vulnerabilities
here.

Q: Can I use this in my modpack?
A: Sure. Credit (e.g., a link to the mod's GitHub page) is appreciated but
is not required. Monetization and redistribution are allowed as per the
MIT License.

Q: This mod doesn't speed up anything.
A: The effect may not be noticeable on high-end PCs. This mod
is designed primarily for low-end devices. Nevertheless, there is
a video.

Q: How to force-load chunks if the spawn chunks have been removed?
A: If you really need to force-load chunks, load individual
chunks with the /forceload command in 1.13 or newer. For older
versions, you can search for some mod that force-loads chunks.

Q: It says Ksyxis: No Mixin found.
A: If you're using Forge 1.15.2 or older, you may need to install
MixinBootstrap,
MixinBooter,
UniMixins, or any other
Mixin provider of your choice. If you're using Forge 1.16
or newer, or any version of Fabric/NeoForge/Quilt/Ornithe,
you don't need to install anything, and this is a bug.

Be sure to check out the Developer FAQ for the FAQ about this mod's inner workings.

License

This project is provided under the MIT License.
Check out LICENSE
for more information.

Credits

This mod is developed primarily by VidTu,
but it wouldn't be possible without
contributors and
some technologies
used.

Development

Check out the Dev's Corner.

Available Versions

Ksyxis 1.4.3release
MC 1.8, 1.8.1, 1.8.2, 1.8.3, 1.8.4, 1.8.5, 1.8.6, 1.8.7, 1.8.8, 1.8.9, 1.9, 1.9.1, 1.9.2, 1.9.3, 1.9.4, 1.10, 1.10.1, 1.10.2, 1.11, 1.11.1, 1.11.2, 1.12, 1.12.1, 1.12.2, 1.13, 1.13.1, 1.13.2, 1.14, 1.14.1, 1.14.2, 1.14.3, 1.14.4, 1.15, 1.15.1, 1.15.2, 1.16, 1.16.1, 1.16.2, 1.16.3, 1.16.4, 1.16.5, 1.17, 1.17.1, 1.18, 1.18.1, 1.18.2, 1.19, 1.19.1, 1.19.2, 1.19.3, 1.19.4, 1.20, 1.20.1, 1.20.2, 1.20.3, 1.20.4, 1.20.5, 1.20.6, 1.21, 1.21.1, 1.21.2, 1.21.3, 1.21.4, 1.21.5, 1.21.6, 1.21.7, 1.21.8, 1.21.9, 1.21.10, 1.21.11, 26.1, 26.1.1, 26.2-snapshot-1, 26.1.2, 26.2, 26.3-snapshot-1, 26.3-snapshot-2, 26.3-snapshot-3, 26.3-snapshot-4, 26.3-snapshot-5, 26.3-snapshot-6, 26.3-snapshot-7, 26.3-snapshot-8, 26.3-snapshot-9fabric, forge, legacy-fabric, neoforge, ornithe, quilt
April 24, 2026
Ksyxis 1.4.2release
MC 1.8, 26.2fabric, forge, legacy-fabric, neoforge, ornithe, quilt
April 19, 2026
Ksyxis 1.4.1release
MC 1.8, 26.2fabric, forge, legacy-fabric, neoforge, ornithe, quilt
April 19, 2026
Ksyxis 1.4.0release
MC 1.8, 26.2fabric, forge, legacy-fabric, neoforge, ornithe, quilt
April 18, 2026
Ksyxis 1.3.4release
MC 1.8, 1.21.8fabric, forge, legacy-fabric, neoforge, ornithe, quilt
July 31, 2025

How to Install Ksyxis on Your Server

1

Order Server

Order a Minecraft Java server with at least 4 GB RAM (6 GB recommended).

2

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (26.3-snapshot-9).

3

Install Mod

Open the mod browser in the dashboard and search for "Ksyxis". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabricforgelegacy-fabricneoforgeornithequilt

Minecraft Versions

26.3-snapshot-9, 26.3-snapshot-8, 26.3-snapshot-7 (+81 more)

Server-side

Required

Recommended RAM

6 GB(min. 4 GB)

Frequently Asked Questions

Ksyxis server crashes on startup – what to do?

Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 4 GB RAM is allocated and the loader matches the mod version (26.3-snapshot-9). You can switch loaders with one click in the panel.

Is Ksyxis compatible with fabric and forge and legacy-fabric and neoforge and ornithe and quilt?

Ksyxis officially supports fabric, forge, legacy-fabric, neoforge, ornithe, quilt for Minecraft 26.3-snapshot-9, 26.3-snapshot-8, 26.3-snapshot-7. Note: Forge and Fabric mods are NOT cross-compatible – pick one loader and stick with it. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Ksyxis – how to optimize performance?

Recommended RAM: 6 GB (per 5 players). Use /spark profiler to check if Ksyxis consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.

Rent Modded Server

Install Ksyxis with just one click on your server.

Recommended RAM
6 GBfrom €7.800000000000001/mo
Minimum 4 GB | per 5 players
Create Server Now
1-Click Mod Install
NVMe SSD Storage
DDoS Protection included

Details

License
MIT License
Server-side
Required

Supported Versions

26.3-snapshot-926.3-snapshot-826.3-snapshot-726.3-snapshot-626.3-snapshot-526.3-snapshot-426.3-snapshot-326.3-snapshot-226.3-snapshot-126.2+74 more