StutterFix Reforged

StutterFix

StutterFix is a mod that allows you to configure the main threads of the game, allowing you to control stuttering. By default, the mod already comes with an approximate configuration to reduce stuttering.

This is an unofficial Forge port of StutterFix.

The new version 0.1.8 allows you to configure threads, I added a new option in the menu.

Option Menu

There are five options available for configuration, with N being the number of threads your processor supports:

• Worker threads count Vanilla default N - 1, StutterFix default N - 5, is the number of threads running to perform tasks like generating chunks. The smaller the value, the less CPU overhead, reducing stuttering, and the slower the chunk generation speed.

• Priority cutoff point Indicates the cutoff point for the priority of worker threads. The higher the value, the higher the first part of the threads will be with normal priority and the lower the last part will be with minimum priority. The value must be less than the number of worker threads to have the cutoff point, otherwise all threads will have normal priority. Threads with minimum priority help reduce stuttering.

• Render thread priority The rendering thread is where the client runs, such as the player, sound, inputs, and rendering.

• Server thread priority In singleplayer mode, the game starts the integrated server that runs the entire world, such as ticks, entities and initializing the generation of chunks (which will be executed in the worker threads). This option only appears when playing in a world in singleplayer mode.

• Remove Yield() The rendering thread has a call made in each loop, called yield(), with the function of informing the scheduler that the current thread is willing to abandon the current use of the processor to other threads. Removing yield() can make FPS more stable.

The Worker Threads Count and Priority Cutoff Point settings have little effect in multiplayer because the world is generated by the server and therefore there are no stuttering issues for the client caused by world generation.

Disabling GUI - Version >= 0.2.3

In the config folder in the .minecraft directory there is the stutterfix-config.json configuration file, where there is the "hide_gui" option. Set it to true to disable the game interface. To enable the interface again, set it to false.

It is necessary to start the game with the updated mod at least once to generate the configuration file.

Other mods I recommend

I recommend using this mod with Sodium and Concurrent Chunk Management Engine (C2ME) where compatible.

Changelog

In versions 0.1.5 and earlier, all these worker threads have minimum priority. Due to the low responsiveness in chunk generation, version 0.1.6 was released with the worker threads in normal priority.

In version 0.1.7, the first half of the worker threads were left with normal priority and the last half with minimum priority to better reduce stuttering while maintaining responsiveness when generating chunks.

In version 0.1.8, the option to configure threads was added to the menu, and the removal of Thread.yield() was also removed as it was conflicting with other mods like VulkanMod.

In version 0.1.9, the Remove Yield() option was added. If you use VulkanMod, this option will not appear in the menu. The tooltip was also improved.

In version 0.2.0, changes were made to the GUI to resolve compatibility issues with some mods, such as Bedrockify.

Warnings

The mod does not affect stuttering caused by the garbage collector. JVM arguments and garbage collector configuration are outside the scope of this mod.

If you encounter any issues, please report them on GitHub.

Credits

Original mod by wisecase2.

This project is an unofficial Forge port and is not affiliated with or endorsed by the original author.