
Minecraft Optimus
A modpack that purely optimizes Minecraft Java to run the best it can be, for versions 1.20.1 and 1.21.4, with little to no visual or gameplay changes!
Screenshots

About this Modpack
A modpack that purely optimizes Minecraft Java to run the best it can be, for versions 1.20.1 and up, with little to no visual or gameplay changes!
The goal here is to improve how Minecraft runs as much as possible, while making near-zero changes to gameplay or visuals.
All contributions and suggestions are welcome. Join the Discord server link!
UPDATES:
- Now updated to 1.0.7:
- Java 1.20.1 for Forge, NeoForge and Fabric
- Java 1.21.4 for NeoForge, Fabric and Quilt!
- Better Beds Reforged has been removed in all versions that contain EnlightenedBlockEntities or EnhancedBlockEntities as it conflicts with those mods, causing beds to render incorrectly.
- VanillaIcecreamFix has been updated and is now compatible with Applied Energistics 2, and you are now free to add AE2 to any instance of Minecraft Optimus of version 1.0.3 or later.
Coming soon:
- versions for Java 1.21.6 will be released as soon as the mods involved are updated. This will then supercede the Java 1.21.4 versions.
Known incompatibilites:
- Palladium causes Create-mod connected textures to malfunction. Disable Palladium if using this modpack with any Create mods.
Available Versions
How to Set Up a Minecraft Optimus Server
Order Server
Choose at least 4 GB RAM (6 GB recommended for Minecraft Optimus). Based on player count: per 5 players.
Install Modpack in Dashboard
Open the modpack browser in the dashboard, search for "Minecraft Optimus" and click "Install". The quilt loader and Minecraft 1.21.4 are configured automatically.
Start Server & Play
Start the server – all mods are loaded automatically. Share the server IP with friends and play together!
Frequently Asked Questions
Minecraft Optimus server crashes or won't start – what to do?
Most common causes: insufficient RAM or wrong quilt loader. Check latest.log for "OutOfMemoryError" → increase RAM to at least 6 GB. For "Mixin" or "ClassNotFoundException" errors: modpack version and loader don't match. With Mado Hosting, loader and Minecraft version are auto-configured on modpack install – preventing most startup issues.
How much RAM does a Minecraft Optimus server really need?
Minimum 4 GB, recommended 6 GB for stable performance. per 5 players. Important: Minecraft modpacks need more RAM than vanilla – plan extra per additional player. With Mado Hosting, you can scale RAM up live at any time without data loss (from €8/month).
Can I add custom mods to Minecraft Optimus without conflicts?
Yes, but check compatibility: only use mods for the same loader (quilt) and same Minecraft version (1.21.4). Common issues: ID conflicts with recipe mods and incompatible coremod versions. The Mado dashboard mod browser only shows compatible mods and warns about known conflicts.
Minecraft Optimus server lagging – performance tips
1) Increase RAM to 6 GB+. 2) Reduce server view-distance to 8 (server.properties). 3) Pre-generate chunks with the "Chunky" plugin. 4) Use /spark profiler to check which mods consume the most tick time. With Mado Hosting, all servers run on NVMe SSDs with dedicated CPU cores – eliminating hardware as a bottleneck.
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Rent Minecraft Optimus Server
Start your own server with automatic modpack installation.
Supported Versions
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From €8.00/month with 6 GB RAM for the best performance.
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