Ksyxis
Modby VidTu
Speed up your world loading by removing unneeded chunks.
Type
Mod
CurseForge Downloads
11,231,166
CurseForge ID
Modrinth Downloads
9,081,224
Modrinth ID
Last Updated
Nov 6, 2026
Description
Ksyxis
Speed up your world loading by removing unneeded chunks.
Language
- English (Extended Version)
- Русский
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
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: CurseForge,
Modrinth,
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.
Compatibility
Mod Loaders
Game Versions
Recommended Gear
AffiliateHardware and extras that pair well with this mod.
As an Amazon Associate I earn from qualifying purchases.
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