Smooth Boot (Recreated)
Java mod listed for Minecraft 1.21. Downloads from the MC Java Mods app on Android.
⬇ Download on CurseForgeThe author built this one for Minecraft 1.21.1 on NeoForge. On other versions it may install and then do nothing.
Unofficial port to NeoForge
If you have a PC with a older or lower end CPU (ex. CPUs with 8 or less threads), you may have noticed that Minecraft takes up 100% of the CPU when loading into the title screen, causing cursor stutter and makes multitasking painfully difficult. Smooth Boot solves this problem completely, and loading should be much smoother and potentially faster as well.
Features
- Change amount of threads used for loading
- Change priority of threads used by Minecraft
How the mod works
Minecraft uses executors to run multithreaded tasks. The problem is that the tasks that are ran during loading are quite heavy on the CPU, so it leads to 100% CPU usage. And, some of the tasks do not necessarily benefit from multithreading. Smooth Boot fixes these problems by change the parameters of the executors, including the number of threads they use and the priority of each thread.
For more information, please read the Smooth Boot wiki
Compatibility
The mod should be compatible with all mods including Optifine. However, it's worth noting that the mod uses mixin overwrites on some methods used for loading the game. If you run into incompatibility issues, please leave a comment.
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.21.1
- 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 CurseForge — 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.
- Ships as smoothboot-1.0.jar — drop this file into the mods folder
- Download size: 16 KB
- Download link checked 28 Sept 2026 — working
These come from our own check of the pack file, not from the source page.