ModelEngine Client Optimization
This mod optimizes the bandwidth and packets that client recieves by a custom payload and more!
About this Mod
MEG Client Mod
A client-side Minecraft mod that optimizes Model Engine animation packets by replacing per-entity metadata updates with a single bulk payload using half-precision encoding, significantly reducing bandwidth usage for complex models.
Supported Platforms
- Fabric
- Forge
- NeoForge
Minecraft: 1.19.4 - 1.21.x
How It Works
When installed, the mod registers the modelengine:bulk_data plugin channel. The Model Engine server plugin detects this and sends optimized bulk animation packets instead of individual entity data updates. Transformation data (position, rotation, scale) is encoded as half-precision floats, cutting payload size roughly in half compared to vanilla packets.
Players without the mod receive standard packets as usual, no compatibility issues.
Installation
Drop the mod JAR into your mods/ (Fabric/NeoForge) or mods/ (Forge) folder. No configuration needed. The server must be running Model Engine 4.
Important Notice
The custom payload protocol (modelengine:bulk_data) is designed exclusively for use with Model Engine. Third-party model plugins that send packets over this channel without proper implementation may cause visual glitches, desyncs, or client crashes. If you experience issues while using a non-Model Engine plugin, disable this mod and report the problem to that plugin's author, not here.
License
AGPL-3.0 - Copyright (c) 2026 Taiyouh
Available Versions
How to Install ModelEngine Client Optimization on Your Client
Install the Mod Loader Locally
Install fabric for your local Minecraft version.
Download the Matching File
Choose the ModelEngine Client Optimization file for fabric and Minecraft 26.2.
Install Mod
Place the .jar file in your local .minecraft/mods folder and restart Minecraft. No server-side installation is required.
Compatibility
Mod Loaders
Minecraft Versions
26.2, 26.1.2, 26.1.1 (+21 more)
Server-side
✗ UnsupportedRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
Does ModelEngine Client Optimization need to be installed on the Minecraft server?
No. Modrinth marks ModelEngine Client Optimization as unsupported on the server side. Install it only in your local Minecraft mods folder. Your server can remain unchanged unless the mod page lists an additional dependency.
Which version and loader does ModelEngine Client Optimization require?
Use a file for fabric, neoforge and your exact Minecraft version. Supported versions include 26.2, 26.1.2, 26.1.1. Files for different loaders are not interchangeable.
ModelEngine Client Optimization is not working – what should I check?
First check the Minecraft version, loader version and required dependencies. Put the .jar file in your local .minecraft/mods folder and remove older duplicates. Because this mod is client-side, adding server RAM will not fix it.
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