Subtle Fix
The author built this one for Minecraft 1.20.1 on Forge. On other versions it may install and then do nothing.
This mod aims to temporarily fix the issue that causes the crash by Subtle Effects about threads:
Description: Accessing LegacyRandomSource from multiple threads
This crash happens because some visual effects try to access game data from a thread that isn't safe, causing a race condition.
This mod makes:
- The game continues running without crashing.
- The problematic effect is simply skipped for that frame.
Therefore, there might be some unintentional lag when encountering problematic effects.
For better performance, it is recommended to turn off Item Rarity in Subtle Effects config.
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.20.1
- 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 subtle_fix-1.0.0.jar — drop this file into the mods folder
- Download size: 3 KB
- Download link checked 22 Aug 2026 — working
These come from our own check of the pack file, not from the source page.