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Just Optimized project artwork

Modrinth · Minecraft modpack

Just Optimized

Speeds up the game performance by a lot for both client and server

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

Quick answer

Which Just Optimized release matches 1.21.9?

Updated yesterday
Best match for your filters Just Optimized
Game version 1.21.9
Loader Fabric 0.20.1

Just Optimized is a complete pack release for 1.21.9 with Fabric 0.20.1. Install it as its own launcher instance. If the creator publishes a separate server file, make sure it names this exact pack release. 40 mods in this pack file.

Pack setup

How should I set up Just Optimized for players and a server?

Use Just Optimized 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 Just Optimized
Dedicated server setup Match Just Optimized
Pack loader Fabric 0.20.1

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 40
Client only 19
Server only 4
Not labelled 17

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 Just Optimized?

Just Optimized on 1.21.9. The pack contents and setup notes below stay tied to that release.

40 mods in this pack file

The selected pack release is Just Optimized. That file is for Minecraft 1.21.9 with Fabric 0.20.1. It contains 40 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 Just Optimized?

The modpack tries to optimize the game in a way to keep the vanilla parity and optimizations as high as possible. I do my best in updating the modpack and keeping things as clean as possible.

Features
  • Higher FPS using modern optimization mods
  • Faster chunk generation and loading times
  • Lower RAM usage
  • Better performance in both singleplayer and multiplayer
  • Improved graphics settings and cleaner configuration menus
  • Smarter culling to reduce unnecessary rendering
  • Clean, lightweight, and regularly updated
726 FPS at 32 Render Distance
  • Specs: Intel Core i5-12400F & NVIDIA GeForce RTX 3060
  • World Seed: 3354544725867848366
  • Modpack Version: 26.3-1.0.9

32 render distance benchmark

Included Optimizations

The pack combines a bunch of well-known optimization mods, including:

  • Sodium
  • Lithium
  • FerriteCore
  • ModernFix
  • C2ME
  • ImmediatelyFast
  • Entity Culling
  • Better Block Entities
  • More Culling
  • Very Many Players
  • ServerCore

...and various other performance mods and libraries.

Project description from Modrinth.

Mods in Just Optimized

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

alternate-current-mc1.21.9-1.9.0.jar SHA-1 b7f63768ac688ecb423865c688a6efdaaff205a8 · Modrinth version FY6xclLZ · Project link unavailable Server only
BadOptimizations-2.3.3-1.21.9-21.10.jar SHA-1 20e1b894d40fea2cd13abcf32f224609445621ae · Modrinth version 6uGJM3JZ · Project link unavailable Client only
bbe-1.2.0+1.21.10.jar SHA-1 bd12066547d1f791e905fb29356f0601b4c2f57a · Modrinth version r4ORW6Zs · Project link unavailable Client only
betterbiomeblend-1.5.2.jar SHA-1 c6528c9760ecfd2987484aabe54c3d26e931e3a7 · Modrinth version HZlLCOct · Project link unavailable Client only
BetterRenderDistance-1.2.0+mc1.21.9-1.21.10.jar SHA-1 ec0c72c71ad9ea9cb3201827fc53b2c486058dee · Modrinth version OoyIrpp4 · Project link unavailable Client only
c2me-fabric-mc1.21.9-0.3.5+alpha.0.44.jar SHA-1 cece9cd080d36395ec2aa9b27e9c1b011eea8661 · Modrinth version I2zfEP8w · Project link unavailable Side not labelled
cloth-config-20.0.149-fabric.jar SHA-1 c86e380bdac24e4ecdd148558e9d4ddf32c86059 · Modrinth version qMxkrrmq · Project link unavailable Side not labelled
cullleaves-fabric-4.1.1+1.21.10.jar SHA-1 7ac52812e0792a9576ac92c13b2098ddfddeb2d6 · Modrinth version xAVaNZcB · Project link unavailable Client only
entityculling-fabric-1.9.3-mc1.21.10.jar SHA-1 db022121a0326fe346faa7ff2412a61758b91c0a · Modrinth version YkqoVa13 · Project link unavailable Client only
fabric-api-0.134.1+1.21.9.jar SHA-1 c1ccbf0f5d3aca7d86963677da71e700498c3c9b · Modrinth version vczmWJBj · Project link unavailable Side not labelled
fabric-language-kotlin-1.14.2+kotlin.2.4.21.jar SHA-1 f1d4ab6ecd54d9782521333a87eb50724ecb03e0 · Modrinth version SKW1BTL3 · Project link unavailable Side not labelled
fastquit-3.1.2+mc1.21.10.jar SHA-1 d173dc167ca729dbb6cd0de3d6c1435c7f665039 · Modrinth version ZgHqClek · Project link unavailable Client only
ferritecore-8.1.0-fabric.jar SHA-1 fbc854f0a30657a0f8b4a5c79ce6580f3f8fbea9 · Modrinth version bPLllEgi · Project link unavailable Side not labelled
ForgeConfigAPIPort-v21.9.8+mc1.21.9-Fabric.jar SHA-1 f1031ee5f1a6f978a886277f4c0e34063426aebd · Modrinth version 3Zr2vML8 · Project link unavailable Side not labelled
fzzy_config-0.7.7+1.21.9.jar SHA-1 d0599a28fb88e913b313a72a6123354f6b59b053 · Modrinth version zxQQiUtX · Project link unavailable Side not labelled
ImmediatelyFast-Fabric-1.13.6+1.21.10.jar SHA-1 582290ea96fb51c7a3e21d11f5c5701d798c1341 · Modrinth version 9hztj0xA · Project link unavailable Client only
iris-fabric-1.9.7+mc1.21.10.jar SHA-1 f96d48791a372edb0fa3adfc80848c4f27eae737 · Modrinth version a98UkgML · Project link unavailable Client only
Ixeris-4.6.10+1.21.11-fabric.jar SHA-1 c4311d4149e47285f80d351fc48d4499a76eb85c · Modrinth version 8rVRHBcq · Project link unavailable Client only
krypton-0.2.10.jar SHA-1 94ddaeeae6ca7fecc79e54a0aa02a5438a775a99 · Modrinth version O9LmWYR7 · Project link unavailable Side not labelled
language-reload-1.7.6+1.21.10.jar SHA-1 56bb8175b6a9ef01180c694ac94b9213841217e5 · Modrinth version KeQdftoX · Project link unavailable Client only
lithium-fabric-0.19.2+mc1.21.9.jar SHA-1 0f9b70bd70c14f293b76e90917dd7de78c47c073 · Modrinth version L1sSIxFm · Project link unavailable Side not labelled
midnightlib-fabric-1.10.0+1.21.10.jar SHA-1 bb91d29c5b0142c956aa87b2d7ff84347c88ded0 · Modrinth version 7KOvH3Yy · Project link unavailable Side not labelled
modernfix-fabric-latest.jar SHA-1 1e5c6a097293ca54b590bdd1abf1c038030845af · Modrinth version EGQnhQyx · Project link unavailable Side not labelled
modmenu-16.0.1.jar SHA-1 f49f423d397fa05218d0aede4e07cd878d6a81ea · Modrinth version pYbFlVtR · Project link unavailable Client only
moreculling-fabric-1.21.9-1.5.0-beta.2.jar SHA-1 3ab31aec861c6bcade87f7e9317d1ca2ac7a19f3 · Modrinth version nASRyMbu · Project link unavailable Client only
particle_core-0.3.2+1.21.9.jar SHA-1 353abc578625479558f39e382b60dbb5022b724a · Modrinth version fnggOyEX · Project link unavailable Client only
placeholder-api-2.8.1+1.21.10.jar SHA-1 4950367323147265b272ad2156bf1a343db3f64c · Modrinth version T5pDJV1K · Project link unavailable Side not labelled
reeses-sodium-options-fabric-1.8.6+mc1.21.10.jar SHA-1 55db55556d81a3b68f8f1d08a74ab00c127f3886 · Modrinth version nUGhyPwZ · Project link unavailable Client only
ResourcefulConfig-fabric-1.21.9-3.9.2.jar SHA-1 18bbfd8e2429667aa90cdcc8d2e621431a2fe54a · Modrinth version GEaeaZS0 · Project link unavailable Side not labelled
rrls-5.1.12+mc1.21.9-fabric.jar SHA-1 e70e5bd05c2fcc81a023c3bca72098c62a855448 · Modrinth version 76XHcrde · Project link unavailable Client only
ScalableLux-0.1.6+fabric.c25518a-all.jar SHA-1 9df93ab6442fa374c17fab6b5181fe2c215d9d5b · Modrinth version PV9KcrYQ · Project link unavailable Side not labelled
servercore-fabric-1.5.14+1.21.9.jar SHA-1 6a732327f7855aa64f820942031d6e4adeba68a6 · Modrinth version TTQGy6U8 · Project link unavailable Server only
sodium-extra-fabric-0.7.1+mc1.21.10.jar SHA-1 c5243648eda711f87febe22f0ecbe86323541b1c · Modrinth version 8CGTW5B3 · Project link unavailable Client only
sodium-fabric-0.7.3+mc1.21.10.jar SHA-1 1c3ffa862d9fa4479abf67a88527907d60237248 · Modrinth version sFfidWgd · Project link unavailable Client only
Stfu-2.9.1-1.21.9.jar SHA-1 6a38937f8ba98745ef83cd6242042a0e7eb5e959 · Modrinth version slyQWh3H · Project link unavailable Client only
structure_layout_optimizer-1.1.4+1.21.9-fabric.jar SHA-1 a0cfecdd65ccf2a9a2d8ff1eec627c1e7dfde2cc · Modrinth version d0Vgh2W9 · Project link unavailable Server only
vmp-fabric-mc1.21.9-0.2.0+beta.7.212-all.jar SHA-1 23b9c12ab4d3badb31a1869cb193d3bef6129c49 · Modrinth version 2Cz5TBGp · Project link unavailable Side not labelled
yet_another_config_lib_v3-3.8.0+1.21.9-fabric.jar SHA-1 9e25b9aa5118dc77d6ec1192df0c1bb237f7e9d1 · Modrinth version UZmV6xf4 · Project link unavailable Side not labelled
zconfig-1.0.0+1.21.x.jar SHA-1 cb9fe03e6f64b900317d7edf305c1d7d43412a60 · Modrinth version yD19P1nG · Project link unavailable Side not labelled
zfastnoise-1.1.2+1.21.9.jar SHA-1 ca403dabae13d2ac4844c4887ff86048a098e23d · Modrinth version 34ET3cNI · Project link unavailable Server only

Pick your setup

Just Optimized by Minecraft version and loader

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

51 available setups

Showing the newest 12 of 49 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

Just Optimized versions and loaders

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

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