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asyncchat

by boostergamingpromax

asyncchat moves Minecraft chat message handling off the main thread so chat traffic on a server does not cause stutters.

FabricServer-side onlyMIT License1.21.11

What it does

On a server, incoming chat messages are normally processed on the main game thread, where a burst of messages can stall the tick loop. asyncchat takes that handling onto a background thread, so chat rendering no longer competes with the main thread. The mod is server-side only: only the server needs it, and players join without installing anything. It is released under the MIT License and is not open source, and it requires Fabric API. Files are published for Fabric 1.21.11 only.

Key features

  1. Background message handling

    Chat messages are processed on a separate thread instead of the main game thread.

  2. Fewer chat stutters

    Message bursts on busy servers no longer freeze the game for everyone connected.

  3. Server-side install

    Only the server runs the mod, so clients need no changes to benefit from it.

Compatibility

Latest build for each game version and loader.

1.21.111.0.0
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

Requirements

Dependencies declared by the latest file for each loader.

Required 1

Fabric APILightweight and modular API providing common hooks and intercompatibility measures utilized by mods using the Fabric toolchain.
Required

How it compares

Full comparison

Remove Chat is server-side only, open source under CC0 1.0 Universal, and covers Fabric and Quilt for 1.20 – 1.21.11. ChatLagFix is client-side only, open source under the MIT License, and targets 1.21.11 on Fabric. MChat Fix is client-side only, closed under All rights reserved, and also targets 1.21.11 on Fabric.

ModLoadersGame versionsEnvironmentUpdated
asyncchatFabric1.21.11Server-side only2026-05-08
Remove ChatFabric and Quilt1.20 – 1.21.11Server-side only2026-01-23
ChatLagFixFabric1.21.11Client-side only2026-03-17
MChat FixFabric1.21.11Client-side only2026-06-10

Questions

Does asyncchat need Fabric API?

Yes. Fabric API is required, so it must be installed alongside asyncchat on the server.

Do players need to install asyncchat?

No. Players join without it, since only the server has to run the mod.

What the author says

its just a mod that removes the stutters that come whenever you chat or a msg comes in chat on server and is server side only. this mod modifies the minecraft msg handling system,it removes the msg render off of main thread and adds it as a background thread. I KNOW MOJANG WILL NEVER FIX IT.
boostergamingpromax, on the Modrinth page

Official listing

Owner
boostergamingpromax
Published
2026-05-08
Updated on Modrinth
2026-05-08
Facts verified
2026-10-15
Open on ModrinthCompare