
Modrinth · Minecraft modpack
Performance Only
The modpack specifically aimed to eliminate stutters
Quick answer
Which Performance Only release should I use?
Performance Only - 1.21.1 is a complete pack release for 1.21.1 with Fabric 0.19.3. Install it as its own launcher instance. If the creator publishes a separate server file, make sure it names this exact pack release. 29 mods in this pack file.
Pack setup
How should I set up Performance Only for players and a server?
Use Performance Only - 1.21.1 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 Performance Only?
Performance Only - 1.21.1. Change the pack release and its contents or setup may change too.
The selected pack release is Performance Only - 1.21.1. That file is for Minecraft 1.21.1 with Fabric 0.19.3. It contains 29 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 Performance Only?
I hate stutters of all kinds and minecraft for a very long time has been full of them.
So over the course of a couple years and a couple computers of varying specifications. Ive got to know what makes or breaks my framerate.
This modpack is a result of whats worked for me over the years.
This modpack doesn't add, remove or edit anything that alters visuals hence the name "Performance only".
That stuff is all up to you!
Benchmarks with other modpacks
How I benchmarked:
Latest 1.21.11 pack available was chosen.
The modpacks were loaded on a seperate world that were traversed on for ~2 minutes then another world with the "fpstest" seed was loaded, teleported using "/tp @s 0 100 0 90 0" Waited for about a minute to warmup again. Then started moving forward also starting CapframeX's capture
Settings were the same across all modpacks (32-RD 8-Sim no DH, Voxy, vsync or fps cap)
Take these with a grain of salt every computer is different!!!
My specs:
RTX 4060TI ryzen 7600X 32gb ram (12gb allocated)
Versions <26.1
In minecraft versions below 26.1 the JVM chooses G1GC as the default garbage collector.G1GC causes stutters due to it relying on pauses to garbage collect.
I would recommend adding these to your jvm Arguments (REQUIRES JDK 21+):
- -XX:+UseZGC -XX:+ZGenerational
ZGC is the new default collector for minecraft versions 26.1 and up.

Project description from Modrinth.
Mods in Performance Only - 1.21.1
Open any mod on Modpacks.ch to check its files and dependencies.
a3618fb65c8b743f1982c03716d59785bf2081db · Modrinth version 2HCbK9wC · Project link unavailable Client only1461d8e46391efd32a3085150e86094c9f6f5c9d · Modrinth version S2qthD5S · Project link unavailable Client only45bda6a191130758e93c728d9164fb4bf96c11cf · Modrinth version 4kQdubQA · Project link unavailable Side not labelled5d82342a2df53fd6df712bfdd583a811572918a4 · Modrinth version HpMb5wGb · Project link unavailable Side not labelled6fb7d4ec9c2d2dc5b58577324b47671d3e28d7a4 · Modrinth version dO7QNiof · Project link unavailable Side not labelled7e8c9c44049e6575e75d1fe38d6006306b8d5623 · Modrinth version hsWvcyFJ · Project link unavailable Client only1bc9caf399a9eadddaec3215e31594ca40fc9485 · Modrinth version aUrTRV7H · Project link unavailable Side not labelled620cb137a9dc69ce86f3114f19d9eedab16366f5 · Modrinth version bdhiINYC · Project link unavailable Side not labelleda8a6a34fcda177da2828cedef44e0e538cf78aad · Modrinth version sOzRw3CG · Project link unavailable Side not labelledcff21f254e911a323fe49015d12e548d3e3b8d7c · Modrinth version kOmySYD4 · Project link unavailable Side not labellede4e125088d8654f91562e78a00bdec22f74bc07f · Modrinth version ATB4eNEP · Project link unavailable Client only8da02944ed954da2e54df889ffe7c589b6031602 · Modrinth version ibXzxN3B · Project link unavailable Client only73e792eb5f120787becda4b87b6ff18b26caea50 · Modrinth version Acz3ttTp · Project link unavailable Side not labelled7d82a004403b7780d4443d8e40361a55cfd0ae63 · Modrinth version N08Z8wog · Project link unavailable Side not labelled4ab39e9c736e7204146792c545ec5b29fc0a3872 · Modrinth version NnNX8LBn · Project link unavailable Side not labelled8af1b0b9ee18eab5cd5e5c97c497f0e473c49e9a · Modrinth version v6Xx3fbU · Project link unavailable Client onlyfcacddf1cecc0fdc9ba937197c74402fd436e9c7 · Modrinth version LekDmqLf · Project link unavailable Client onlyed002a8bb07f24d220c66326ce01718b4295839c · Modrinth version wsO2Asao · Project link unavailable Client only21134697c26b73cde41d1575c725ab30736d6b17 · Modrinth version mau4pnKr · Project link unavailable Client onlyaa1b9a49f9f190dfe4825c502b150817dd2998c3 · Modrinth version U5bhVym2 · Project link unavailable Side not labelled2ce889d9b1b210eef005ea03c3bbb39289c26e3f · Modrinth version Yx1tgJMI · Project link unavailable Side not labelleda6982d25211a307416c6c050e41b087306caf6e8 · Modrinth version GQ2a51Rl · Project link unavailable Server only375bed0af4be2b879c41809233f9b100ea0841f4 · Modrinth version yEzglIFN · Project link unavailable Client only330bfdc64bb48098f9d5faa8a5b752ebef4da926 · Modrinth version M9kVcb0e · Project link unavailable Client only70381d969eb63c0aa09dc581ef4b9a79782c0123 · Modrinth version KIRFiWG4 · Project link unavailable Client only47fe715b4b41644817cac50a7c79ecf26f48d7e3 · Modrinth version F4sjmsi3 · Project link unavailable Side not labelled232803a232720cbac3205079be2b076093f76e59 · Modrinth version nK30v84J · Project link unavailable Client only267975777ba52a23d4423a60e9288f9ce288344e · Modrinth version VmlY7QTx · Project link unavailable Side not labellede075503382f70715ab9fc6f66d603397a86eb3e0 · Modrinth version o3cDn8Vp · Project link unavailable Side not labelledPick your setup
Performance Only by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
26.1.2
1 loader build1.21.11
1 loader build1.21.1
1 loader buildMade local changes? Try them in a copied instance before touching a world you care about.
Recent files
Performance Only versions and loaders
Looking for an older file? The official Modrinth project page is in Resources.