
Modrinth · Minecraft mod
ThreadTweak
Improve and tweak Minecraft thread scheduling. Fork of Smooth Boot for ≥1.20
Quick answer
Which ThreadTweak release should I use?
ThreadTweak 0.1.8 targets 1.21.9, 1.21.10, 1.21.11 with Fabric, Quilt. Installation on the client is optional. Installation on the dedicated server is optional. All 1 required mods have matching files.
Where it goes
Is ThreadTweak required on the client, server, or both?
Installation on the client is optional. Installation on the dedicated server is optional.
The source marks this as usable on both the client and server.
What else does ThreadTweak 0.1.8 need?
0.1.8. Change the file and its required mods may change too.
Install Fabric API first. We found matching files for this game-version and loader setup.
We only count dependency files that match this setup. A file for another loader does not fill the gap.
Before you install it
Add ThreadTweak without breaking your instance.
Built for ThreadTweak 0.1.8. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use 0.1.8. It targets 1.21.9, 1.21.10, 1.21.11 with Fabric, Quilt; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
Install Fabric API first. We found matching files for this game-version and loader setup.
- 03
Put it on the correct side
Installation on the client is optional. Installation on the dedicated server is optional.
- 04
Pick the file you checked
Use the “Get this file” button beside 0.1.8. It opens that exact file at the source.
About this project
What does ThreadTweak add?
ThreadTweak lets you improve and tweak Minecraft CPU scheduling. It is a maintained version of the original Smooth Boot mod, allowing you to still change CPU thread priorities in-game.
Why was this made if it's no longer needed?
While the main function of Smooth Boot was fixed in 1.19.4, the mod still allows you to adjust thread priorities, which can still be quite beneficial on some systems as shown in UltimateBoomer/mc-smoothboot #54.
Is this faster than the original mod?
Not in any way - this is simply a maintained version of the final version of Smooth Boot. There may or may not be extra features or improvements added as requested or while I have the time.
Email with permission from the original author
Hello Devin,
I certainly have no problems if you want to maintain a fork of Smooth Boot for future versions of Minecraft. I understand that Smooth Boot can still be useful in version 1.20 and later, though personally I'm not interested in maintaining the mod right now. I also suggest a different name to be used, though you don't have to if you don't want to. Smooth Boot's original purpose of making Minecraft launch faster is no longer necessary, so a different name would convey the purpose of the mod more accurately.
Thanks,
UltimateBoomer
Project description from Modrinth.
Pick your setup
ThreadTweak by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.21.11
2 loader builds1.21.10
2 loader builds1.21.9
2 loader builds1.21.8
2 loader builds1.21.7
2 loader builds1.21.6
2 loader builds1.21.5
2 loader builds1.21.4
2 loader builds1.21.3
2 loader builds1.21.1
2 loader builds1.21
2 loader builds1.20.6
2 loader buildsShowing the newest 12 of 17 game versions. Older files are in the list below.
Check the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
ThreadTweak versions and loaders
0.1.8
threadtweak-fabric-0.1.8+mc1.21.11.jar
20 Feb 2026
0.1.7
threadtweak-fabric-0.1.7+mc1.21.5.jar
12 Apr 2025
0.1.6
threadtweak-fabric-0.1.5+mc1.21.3.jar
23 Nov 2024
0.1.5
threadtweak-fabric-0.1.5+mc1.21.1.jar
23 Aug 2024
0.1.4+mc1.21
threadtweak-fabric-0.1.4+mc1.21.jar
31 Jul 2024
0.1.3+mc1.20.6
threadtweak-fabric-1.20.6-0.1.3.jar
15 May 2024
0.1.2+mc1.20.4
threadtweak-fabric-1.20.4-0.1.2.jar
12 Dec 2023
0.1.1+mc1.20.2
threadtweak-fabric-1.20.2-0.1.1.jar
27 Sept 2023
0.1.0+mc1.20.1
threadtweak-fabric-1.20.1-0.1.0.jar
3 Jul 2023
Looking for an older file? The official Modrinth project page is in Resources.