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OptimisticMC project artwork

Modrinth · Minecraft modpack

OptimisticMC

This mod collection will allow you to play Minecraft with higher FPS, if you have a very weak computer you should download it. Even if you have a powerful enough PC you should also try my collection.

Choose a version Pick your version below, then grab the matching file.

Quick answer

Which OptimisticMC release matches 1.21.2?

Updated 2 months ago
Best match for your filters OptimisticMC 1.21.2v2
Game version 1.21.2
Loader Fabric 0.16.14

OptimisticMC 1.21.2v2 is a complete pack release for 1.21.2 with Fabric 0.16.14. Install it as its own launcher instance. If the creator publishes a separate server file, make sure it names this exact pack release. 20 mods in this pack file.

Pack setup

How should I set up OptimisticMC for players and a server?

Use OptimisticMC 1.21.2v2 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.

Client instance Install OptimisticMC 1.21.2v2
Dedicated server setup Match OptimisticMC 1.21.2v2
Pack loader Fabric 0.16.14

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.

Plan the server requirements Read the Minecraft installation guide
Referenced mods 20
Client only 11
Server only 1
Not labelled 8

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 OptimisticMC?

OptimisticMC 1.21.2v2 on 1.21.2. The pack contents and setup notes below stay tied to that release.

20 mods in this pack file

The selected pack release is OptimisticMC 1.21.2v2. That file is for Minecraft 1.21.2 with Fabric 0.16.14. It contains 20 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 OptimisticMC?

🚀 OptimisticMC: Peak Performance for Everyone

OptimisticMC is a meticulously curated mod collection designed to squeeze every bit of performance out of your hardware. Whether you are playing on an aging laptop or a high-end gaming rig, this pack ensures your Minecraft experience is buttery smooth and stutter-free.

✨ Why choose OptimisticMC?

Extreme FPS Boost: Advanced optimization of the graphics engine and data processing.
Lightweight & Clean: Only essential performance mods—no bloatware, no unnecessary features.
Multiplayer Ready: Perfectly optimized for both solo survival and large-scale server play.

🛠 Installation & Setup:

Download: We recommend using the Modrinth App for the best experience.
Allocate RAM (Mandatory): Go to the "Java and memory" tab, check "Custom memory allocation," and set your maximum RAM. This is required before your first launch to ensure stability.
Stay Updated: If you are using the Modrinth App, click the "Update all" button to get the latest performance patches.

🐛 Feedback & Support

Found a bug or experiencing a crash? Let us know!
Contact: OptimisticMC report.

Project description from Modrinth.

Mods in OptimisticMC 1.21.2v2

Open any mod on Modpacks.ch to check its files and dependencies.

alternate-current-mc1.21.2-1.9.1.jar SHA-1 a6f82f98db09439b166863f6f307a02651d8a7c3 · Modrinth version DwfiGUVU · Project link unavailable Server only
BadOptimizations-2.2.2-1.21.2-21.5.jar SHA-1 21b777dbd308898c82d7fbaa5093cde9526b577a · Modrinth version flRkZbyf · Project link unavailable Client only
balm-fabric-1.21.3-21.3.5.jar SHA-1 4d6e2b528bffd5f754e5c809faeb651e5e99325d · Modrinth version qlXJq5D1 · Project link unavailable Side not labelled
Chunky-Fabric-1.4.27.jar SHA-1 db518ceda4aa3068d32242285ac9c5816b9d694a · Modrinth version VkAgASL1 · Project link unavailable Side not labelled
cloth-config-16.0.143-fabric.jar SHA-1 59bae445dc49e10b5717a3ae253b12b983ed1f49 · Modrinth version FgXq8Sfo · Project link unavailable Side not labelled
Clumps-fabric-1.21.2-20.0.0.1.jar SHA-1 40dadf3fbccfe2bb1cfb8d54e3b41f79c84ba777 · Modrinth version j6eeqvpj · Project link unavailable Side not labelled
collective-1.21.2-7.89.jar SHA-1 8639c19235af44d5ef76bb178517e759d12cfe99 · Modrinth version GnwIlslS · Project link unavailable Side not labelled
dynamic-fps-3.9.4+minecraft-1.21.2-fabric.jar SHA-1 f842a7d303a740d09147ba61b11728c7555e895c · Modrinth version 4jNwIv4M · Project link unavailable Client only
enhancedblockentities-0.11+1.21.2.jar SHA-1 0c74908f6fd12652d10be424a470e90eb73736d0 · Modrinth version fOVHsM6M · Project link unavailable Client only
fabric-api-0.106.1+1.21.2.jar SHA-1 4ad6afcfb5353bf9b8ee84d744963fbe31762a93 · Modrinth version UEjZZNue · Project link unavailable Side not labelled
FpsReducer2-fabric-1.21.3-2.11.jar SHA-1 5b10a7e18555fdc669237caa1c66996eca087d28 · Modrinth version b8xsGl0c · Project link unavailable Client only
ImmediatelyFast-Fabric-1.7.0+1.21.3.jar SHA-1 ab6128caaee907466e01a35989d37927b65e4bc7 · Modrinth version tpyJcYBi · Project link unavailable Client only
krypton-0.2.8.jar SHA-1 73e792eb5f120787becda4b87b6ff18b26caea50 · Modrinth version Acz3ttTp · Project link unavailable Side not labelled
language-reload-1.7.3+1.21.3.jar SHA-1 0a196a3d7bc61f5d075d9131e8d2bbd9b2c168b3 · Modrinth version PPGTpJ2C · Project link unavailable Client only
lithium-fabric-0.14.6+mc1.21.3.jar SHA-1 60bcb667e8cce63b564837eb7ae6d88ae80bd2bc · Modrinth version W0Cc7ZVd · Project link unavailable Side not labelled
modmenu-12.0.0.jar SHA-1 7175dbf35737848ab9ea1b8d16798cff22f2ba9e · Modrinth version 4xPSbh0l · Project link unavailable Client only
moreculling-fabric-1.21.3-1.1.1.jar SHA-1 ce5d397a26e63bf4beb966cbda25cbca9b64afa2 · Modrinth version byrWCZgY · Project link unavailable Client only
reeses-sodium-options-fabric-1.8.3+mc1.21.4.jar SHA-1 c72f07a8f139f0420cbce29bd9eb29fb24db427f · Modrinth version KoUrx3jJ · Project link unavailable Client only
sodium-extra-fabric-0.6.0+mc1.21.3.jar SHA-1 823f6010519b0ac30b3edbfa814a3c083c31928f · Modrinth version ZQ3k4KzW · Project link unavailable Client only
sodium-fabric-0.6.13+mc1.21.3.jar SHA-1 d7550b5a7e04b4ee76f006b5c32f6513f0ab9ea6 · Modrinth version rLBgU2jc · Project link unavailable Client only

Pick your setup

OptimisticMC by Minecraft version and loader

Choose the version and loader you play, then open the matching release.

34 available setups

Showing the newest 12 of 34 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

OptimisticMC versions and loaders

2 of 65 releases match
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Looking for an older file? The official Modrinth project page is in Resources.