MMR Random Fix

Fix some bugs in Modular Machinery Reborn mod.

24 Downloads

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Rent Server with this Mod

About this Mod

Multiblock Random Fix

This mod fixes two critical issues in Modular Machinery Reborn mod's multiblock preview interface:

Resolves "Accessing LegacyRandomSource from multiple threads" error that crashed preview interface.
Removes the stack limit of 64 items, allowing required items to be displayed correctly.

Now you can browse multiblock preview interfaces without crashes or missing materials.

Available Versions

MMR Random Fix 1.0.1release

MC 1.21.1neoforge

May 18, 2026

MMR Random Fix 1.0.0release

MC 1.21.1neoforge

May 18, 2026

How to Install MMR Random Fix on Your Server

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

Set neoforge Loader

In the panel under "Egg", select the neoforge loader and matching Minecraft version (1.21.1).

Install Mod

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

Compatibility

Mod Loaders

neoforge

Minecraft Versions

1.21.1

Server-side

✓ Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

MMR Random Fix server crashes on startup – what to do?

Most common cause: wrong neoforge 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 (1.21.1). You can switch loaders with one click in the panel.

Is MMR Random Fix compatible with neoforge?

MMR Random Fix officially supports neoforge for Minecraft 1.21.1. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with MMR Random Fix – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if MMR Random 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.