
Why Quietly optmized? (Qo)
Quietly Optimized (Otherwise just QO) is your go to performance modpack. One of the originals performance modpacks on Modrinth with a rich history. Pushing minecraft to its very limits.
Performance increases (Up to 500% over vanilla)
Network stability improvements (Makes playing on servers way more stable)
And many quality of life mods to improve your gameplay.
Speeds up loading times (By a lot for my system)
World loading time decreases
Other micro optimizations
Frequent updates! (Make sure to follow so you never miss them)
Updated rendering engine (OpenGL 4.0+ courtesy of GPUBooster)
My recommended launchers
ATLauncher - One of the BEST launchers you can use. https://atlauncher.com/
MultiMC - Rock solid launcher for those who want a more stable experience. https://multimc.org/
Modrinth's app. The official Modrinth launcher. Its pretty solid. And open source. https://modrinth.com/app
NOT RECOMMENDED LAUNCHERS
Prism Launcher - Hostile fork of PolyMC, current owners tired to force the old repo owner out.
PolyMC - Pretty much dead, you're better off using MultiMC or ATLauncher.
Quilt information - While this modpack technically unofficially supports quilt, it is not recommended for three main reasons.
1 : The projects goal is to remove fabric support entirely, thus splitting the modding scene further. Though they have wiped this off their website, I still have a feeling that this is the underlying goal.
2 : Generally a useless fork of fabric, which was created from drama that was so petty it could've been resolved privately.
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.21.8
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Downloads as Qo-1.2 1.2.mrpack
- Download size: 47 KB
- Download link checked 29 Aug 2026 — working
These come from our own check of the pack file, not from the source page.