
Modrinth · Minecraft modpack
Optimization
🪽 Maximum performance, eliminates stuttering, and speeds up anything while not breaking vanilla. Sodium, Vulkan, Embeddium and Celeritas.
Quick answer
Which Optimization release matches 1.12.2 Forge?
Optimization Celeritas-1.12.2-1.6 is a complete pack release for 1.12.2 with Forge 14.23.5.2864. Install it as its own launcher instance. If the creator publishes a separate server file, make sure it names this exact pack release. 10 mods in this pack file.
Pack setup
How should I set up Optimization for players and a server?
Use Optimization Celeritas-1.12.2-1.6 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 Optimization?
Optimization Celeritas-1.12.2-1.6 on 1.12.2 Forge. The pack contents and setup notes below stay tied to that release.
The selected pack release is Optimization Celeritas-1.12.2-1.6. That file is for Minecraft 1.12.2 with Forge 14.23.5.2864. It contains 10 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 Optimization?

⭐ Optimization Modpack
This is a lightweight modpack focused on optimization, aiming to maximize performance. It consists only of well-chosen optimization mods, with no unnecessary mods included, which sets it apart from others
✨ Features
- Maximum performance
- Fast updates
- Pre-configured settings
- Wide selection(Sodium, Vulkan, Embeddium and Celeritas)
💽 Installation
- Use the Modrinth App or use other launchers that can install modpacks from Modrinth, such as PrismLaucher
- If you are using a official launcher, convert the .mrpack to .zip using the Modrinth Pack to Zip Converter
🧩Java and Flags
- Use Java Eclipse Temurin 25 with the following flags:
-XX:+UseZGC -XX:+UseCompactObjectHeaders - For more details, read the article
Project description from Modrinth.
Mods in Optimization Celeritas-1.12.2-1.6
Open any mod on Modpacks.ch to check its files and dependencies.
91383063e423a345ca5e7bc0134f94c0063f3c29 · Modrinth version TjO2MkkF · Project link unavailable Client onlyd272efd0c807908138edbac8e6cb2d90127ac01a · Modrinth version Y54POAPw · Project link unavailable Side not labelled15aaa39a13e18ab2f29456b25fd9732da1949329 · Modrinth version CbatFFab · Project link unavailable Side not labelledb86b2087682fbfa71e9754c2dcf84fbf9d80a810 · Modrinth version 6gpYZ9e9 · Project link unavailable Client onlyfb22f03b297ca7b1bb7c6d5948e46c12e0a24446 · Modrinth version knltv3Vh · Project link unavailable Client only01de49a880bc47b5b19fc23c46124748bffa4ab0 · Modrinth version toC9TbAp · Project link unavailable Client only50c323de01f2235d351bf5417da6d4ef494b12e6 · Modrinth version UX5XQGgU · Project link unavailable Client onlyf726eaa6b6a536802ce65cd6b015652456b36c0d · Modrinth version a3gijsQd · Project link unavailable Client only2c4847ca6c7cf1d41ff320943394ff61028c7e72 · Modrinth version kwzcEeSC · Project link unavailable Client onlya753529902a23e17da091f15b6dee6690f75b217 · Modrinth version 6MuNBnRe · Project link unavailable Side not labelledPick your setup
Optimization by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
26.1.2
2 loader builds26.1.1
1 loader build26.1
1 loader build1.21.11
2 loader builds1.21.10
2 loader builds1.21.9
1 loader build1.21.8
2 loader builds1.21.7
2 loader builds1.21.6
2 loader builds1.21.5
2 loader builds1.21.4
2 loader buildsShowing the newest 12 of 28 game versions. Older files are in the list below.
Made local changes? Try them in a copied instance before touching a world you care about.
Recent files
Optimization versions and loaders
Looking for an older file? The official Modrinth project page is in Resources.