Sable Chunk Guard
by glaiden
Sable Chunk Guard is a compact NeoForge fix that keeps Sable's physics collision routine from synchronously loading chunks which are already in memory.
What it does
Sable Chunk Guard targets a specific problem in Sable: its physics entity collision code could load chunks synchronously, even when they were already in memory. Before a collision calculation runs, the patch verifies that the needed chunk is present; when a chunk is missing or still being generated, that calculation is dropped for the current tick rather than making the server thread block. The mod is a NeoForge file for 1.21.1 only, and it runs on client and server, so both the server and every player need it. It is released under All rights reserved and is not open source.
Key features
Collision skipped on unsafe chunks
A collision calculation that reaches a chunk still missing or generating is skipped for that tick rather than waited on.
No forced synchronous loads
Chunks already loaded are no longer reloaded synchronously by Sable's physics entity collision code.
Reduced server stalls
This patch reduces the chance of severe 0 TPS freezes, prolonged chunk stalls and hangs on world exit, all of which arise when Sable reaches into chunks that have not finished loading or generating.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Questions
Does Sable Chunk Guard need to be installed on both sides?
Which loader and version does Sable Chunk Guard support?
In the catalog
Sable Chunk Guard is one of 3,545 Optimization mods on ModsFinder, and one of 1,250 Optimization mods for NeoForge. 32,366 mods support Minecraft 1.21.1.
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What the author says
Sable Chunk Guard is a small NeoForge patch mod for Sable. The mod prevents Sable physics and entity collision code from synchronously loading chunks that are not already fully loaded. When a required chunk is missing or still generating, the unsafe physics or collision calculation is skipped for that tick instead of…
Official listing
- Modrinth page
- modrinth.com/mod/sable-chunk-guard
- Owner
- glaiden
- Published
- 2026-05-27
- Updated on Modrinth
- 2026-05-27
- Facts verified
- 2026-10-15