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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 1.19.1?

Updated last month
Best match for your filters OptimisticMC 1.19.1v1
Game version 1.19.1
Loader Fabric 0.18.1

OptimisticMC 1.19.1v1 is a complete pack release for 1.19.1 with Fabric 0.18.1. Install it as its own launcher instance. If the creator publishes a separate server file, make sure it names this exact pack release. 25 mods in this pack file.

Pack setup

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

Use OptimisticMC 1.19.1v1 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 1.19.1v1
Dedicated server setup Match OptimisticMC 1.19.1v1
Pack loader Fabric 0.18.1

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 25
Client only 13
Server only 1
Not labelled 11

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 1.19.1v1 on 1.19.1. The pack contents and setup notes below stay tied to that release.

25 mods in this pack file

The selected pack release is OptimisticMC 1.19.1v1. That file is for Minecraft 1.19.1 with Fabric 0.18.1. It contains 25 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 1.19.1v1

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

alternate-current-mc1.19-1.9.0.jar SHA-1 4678a87a9556822f72697ca209ca305a8b737f83 · Modrinth version J9KWRYnZ · Project link unavailable Server only
BadOptimizations-2.1.4-1.19.1-19.2.jar SHA-1 0d88d7bcfe46a75fcdb0accd65b0b23f8b9b3f15 · Modrinth version iULB5JCQ · Project link unavailable Client only
c2me-fabric-mc1.19.1-0.2.0+alpha.8.33.jar SHA-1 2fa9bb15afe128cae952a8dcae07b5b39ef29a4c · Modrinth version joS4yKA6 · Project link unavailable Side not labelled
Chunky-1.3.38.jar SHA-1 55c845eb6f951f7ef9bffbc27e0bf36b881c71e2 · Modrinth version wFqA1p32 · Project link unavailable Side not labelled
cloth-config-8.3.134-fabric.jar SHA-1 570282f49b3338decfe8290e78c10a1d2f7e23c9 · Modrinth version ZpV0fKbO · Project link unavailable Side not labelled
Clumps-fabric-1.19.1-9.0.0+10.jar SHA-1 f57c2007e6c10b0a731167480b44659368c48a6b · Modrinth version BcqP4XTU · Project link unavailable Side not labelled
Debugify-2.4.0.jar SHA-1 4ee39be6677b77217e86eba172ea35b7227d86ab · Modrinth version qGM9M0wh · Project link unavailable Side not labelled
dynamic-fps-3.9.5+minecraft-1.19.0-fabric.jar SHA-1 7e309837f9f8097e0b047af18e967b5ce8bcce69 · Modrinth version sYsEiK08 · Project link unavailable Client only
enhancedblockentities-0.7.1+1.19.jar SHA-1 78dd28b7d94ef3883e817a328be9e1d66aedaa24 · Modrinth version s76PBY7D · Project link unavailable Client only
entityculling-fabric-1.5.2-mc1.19.jar SHA-1 ff5520d7b10342358575220d88bd39c8cea80dad · Modrinth version R0KPBo5r · Project link unavailable Client only
fabric-api-0.58.5+1.19.1.jar SHA-1 c758f5dfadf35a9ab4f7f688094d599e30b2cbdb · Modrinth version 3fY6NddT · Project link unavailable Side not labelled
ferritecore-5.0.0-fabric.jar SHA-1 14ab2f560fce8f20f5af07129dd71130ab9bb03f · Modrinth version 7epbwkFg · Project link unavailable Side not labelled
FpsReducer2-fabric-1.19.2-2.1.jar SHA-1 d927224666708f8bfa5cc85ede35407a647a2c3b · Modrinth version PzNcUmMG · Project link unavailable Client only
ImmediatelyFast-Fabric-1.4.0+1.19.2.jar SHA-1 fff898b8aaa217bac83ffcc4cae5ef8f4f28aa84 · Modrinth version gPV1o5PO · Project link unavailable Client only
krypton-0.2.1.jar SHA-1 ebf02e469c028ea9e548401cacbb62e434874c08 · Modrinth version vx0mZa04 · Project link unavailable Side not labelled
language-reload-1.6.1+1.19.2.jar SHA-1 87e1a58f10486c8ea93ee758feb9c6538fbb825e · Modrinth version AmPdNCPb · Project link unavailable Client only
lazydfu-0.1.3.jar SHA-1 0dfa8b03ed408fb7fdada29e01cfebba02af1049 · Modrinth version 4SHylIO9 · Project link unavailable Side not labelled
lithium-fabric-mc1.19.2-0.8.3.jar SHA-1 2b7ac2bb11944ebb77441539fa2a8a3f84e4ead1 · Modrinth version Zs3sdHjK · Project link unavailable Side not labelled
memoryleakfix-fabric-1.17+-1.1.5.jar SHA-1 784bbbe9c64ac9d3d4ad19786c02291e607fcf4e · Modrinth version 5xvCCRjJ · Project link unavailable Side not labelled
modelfix-1.8-fabric (1).jar SHA-1 2702ce386bb0e84ea7bc5cac86c314e38389fc89 · Modrinth version 7ainrOrH · Project link unavailable Client only
modmenu-4.0.5.jar SHA-1 1acf6cadf20243d753705e2212d88f90670e49fd · Modrinth version 2Ys0a7JE · Project link unavailable Client only
moreculling-1.19.1-0.17.0.jar SHA-1 bb08f735f0005d9fb219d71682f667dd6db41c7d · Modrinth version 5hjaMcPN · Project link unavailable Client only
reeses_sodium_options-1.6.4+mc1.19.2-build.93.jar SHA-1 b3e82b1a9a226575dff81690559281d02e417e23 · Modrinth version uCsFu5xs · Project link unavailable Client only
sodium-extra-0.4.7+mc1.19.2-build.52.jar SHA-1 95104c6615b7646d9e76be3f23ed3f844ac163d0 · Modrinth version xYkvKUSC · Project link unavailable Client only
sodium-fabric-mc1.19.2-0.4.4+build.18.jar SHA-1 227648dc4f6a8604bafc282612a6de47eff70cd8 · Modrinth version rAfhHfow · 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

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Looking for an older file? The official Modrinth project page is in Resources.