Aetherium
Client-side Fabric performance mod that boosts FPS by intelligently culling distant and off-screen entities, particles, and block entities. Also optimizes sign rendering, beacon beams, clouds, weather, and animated textures. All configurable in-game.
Screenshots
About this Mod
Aetherium
Aetherium is a high-performance client-side Fabric mod for Minecraft 1.21.11, designed to maximize FPS while preserving visual quality and compatibility. It uses advanced distance and frustum culling for entities, block entities, and particles, and streamlines rendering for signs, beacon beams, clouds, weather, and animated textures. All features are fully configurable in-game, with detailed tooltips and recommended settings.
Features
- Advanced culling for entities, block entities, and particles (distance and frustum)
- Hide distant name tags, shadows, and entity features for improved performance
- Particle spawn limiting to prevent lag spikes
- Optimized sign text and glow rendering
- Configurable beacon beam rendering and animation
- Instantly disable clouds, weather, and animated textures
- Safe for multiplayer and compatible with all major performance mods
- Multi-language configuration UI with clear tooltips
Installation
No server installation required. Just add Aetherium to your mods folder - MidnightLib and Fabric API are already included for a seamless experience.
Available Versions
How to Install Aetherium 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 "Aetherium". 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
Aetherium 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 Aetherium compatible with fabric?
Aetherium officially supports fabric for Minecraft 1.21.11. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with Aetherium – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Aetherium 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 Aetherium with just one click on your server.