MChat Fix
MChatFix is a lightweight Fabric mod for Minecraft 1.21.11 that removes chat lag, stutters, and freezes on multiplayer servers. 🚀
About this Mod
MChatFix is a lightweight client-side Fabric mod for Minecraft 1.21.11 that helps eliminate chat-related lag, stutters, and freezes on multiplayer servers.
In vanilla Minecraft, chat messages are processed on the main game thread. When a message is received or sent, the game briefly pauses to handle that processing, which can cause frame drops or freezes on busy servers.
This is especially noticeable during PvP, combat, crystal fights, and other fast-paced situations where smooth performance matters.
MChatFix moves chat processing to a dedicated background thread, preventing chat activity from interrupting gameplay. As a result, your game stays smoother and more responsive, even when chat is active.
Messages may appear with a tiny delay, but your FPS and gameplay remain consistent.
Available Versions
How to Install MChat Fix on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set fabric Loader
In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.11).
Install Mod
Open the mod browser in the dashboard and search for "MChat Fix". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.11
Server-side
✗ UnsupportedRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
MChat Fix 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 3 GB RAM is allocated and the loader matches the mod version (1.21.11). You can switch loaders with one click in the panel.
Is MChat Fix compatible with fabric?
MChat Fix officially supports fabric for Minecraft 1.21.11. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with MChat Fix – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if MChat Fix 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.
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Rent Modded Server
Install MChat Fix with just one click on your server.