Smooth Boot (Forge)
Modby UltimateBoomer
Tweak Java thread settings and prevent Minecraft from lagging your computer when loading up.
Type
Mod
CurseForge Downloads
11,033,296
CurseForge ID
420913
Last Updated
Jun 12, 2026
Description
Link to Fabric version
Update: Smooth Boot is now available as a maven repository on JCenter. You can read about it in the mod wiki.
Smooth Boot - Optimize Minecraft loading performance to be smoother on low end systems and scale better on high end systems.
Available on Fabric and Forge for Minecraft 1.14-1.16.
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.
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