
Modrinth · Minecraft modpack
OptiMax
I assure you that this pack will get the maximum performance out of your device.
Quick answer
Which OptiMax release should I use?
OptiMax(Fab) 1.21.11 is a complete pack release for 1.21.11 with Fabric 0.19.5. Install it as its own launcher instance. If the creator publishes a separate server file, make sure it names this exact pack release. 34 mods in this pack file.
Pack setup
How should I set up OptiMax for players and a server?
Use OptiMax(Fab) 1.21.11 as the pack version. Install the pack as its own launcher instance. The creator’s listing does not name a separate server file, so check the release notes before setting up a dedicated server. Do not upload the ordinary client folder blindly.
A pack is a matched client and server setup, not one mod with an install-side label. Keep its release, loader, manifest and overrides together.
These numbers come from the pack file you chose. “Not labelled” means we don’t know which side it belongs on—not that it is safe everywhere. The file count is not a RAM estimate.
What are the server requirements for OptiMax?
OptiMax(Fab) 1.21.11. Change the pack release and its contents or setup may change too.
The selected pack release is OptiMax(Fab) 1.21.11. That file is for Minecraft 1.21.11 with Fabric 0.19.5. It contains 34 mod projects. The creator’s listing does not name a separate server file. Check their notes before using one, and do not upload an ordinary client folder or rebuild the pack mod by mod. A file count cannot tell us the right RAM, CPU or storage; size the server for the players and world you actually run.
About this project
What kind of pack is OptiMax?

All the essential mods you need to get the maximum possible performance out of Minecraft.
Currently, OptiMax is only available for a few versions, but support for many more is coming soon.
Important Note
This modpack includes Not Enough Recipe Book [NERB], which completely removes the vanilla recipe book.
If you prefer playing with the recipe book enabled, you can simply disable this mod. Nothing else is required.
Recommendations
- Play in Fullscreen Mode — This can significantly improve game performance.
- Limit Your FPS — Setting your FPS limit around 20–30 FPS above your monitor's refresh rate can greatly improve stability and overall smoothness.
For example, if you have a 60 Hz monitor, try limiting your FPS to around 80–90 FPS. - Chunk Issue — If you're experiencing invisible chunks or world generation issues, please trying desabling Concurrent Chunk Management Engine.
Requests
If you would like OptiMax to be available for a specific Minecraft version, you can request it in the Discord server: https://discord.gg/nJFPbzc27A
I'll try to cover version requests as quickly as possible.
Thanks for downloading OptiMax, and I hope you're doing well, my dear friend.
Project description from Modrinth.
Mods in OptiMax(Fab) 1.21.11
Open any mod on Modpacks.ch to check its files and dependencies.
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OptiMax by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
26.2
2 loader builds26.1.2
1 loader build1.21.11
1 loader build1.21.1
1 loader build1.20.1
1 loader buildMade local changes? Try them in a copied instance before touching a world you care about.
Recent files
OptiMax versions and loaders
Looking for an older file? The official Modrinth project page is in Resources.