ModsJava
ClockStopper
Java mod listed for Minecraft 1.21. Downloads from the MC Java Mods app on Android.
⬇ Download on ModrinthA fabric mod that stops the game's tick cycle when no players are online. This allows the server to use practically zero system resources when no players are online.
Pros
- Less server-side CPU usage when no players are online
Cons
- Farms will not run and crops will not grow when no players are online, even in the spawn chunks.
NOTE: This mod will ONLY load on DEDICATED SERVERS. This mod will not be loaded on the client.
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.21.11
- 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 Modrinth — 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.
File checked by MCModsHub
- Ships as ClockStopper-1.0.1.jar — drop this file into the mods folder
- Download size: 5 KB
- Download link checked 19 Oct 2026 — working
These come from our own check of the pack file, not from the source page.