Custom Clear Lag
Java mod listed for Minecraft 1.21. Downloads from the MC Java Mods app on Android.
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Keep Your Minecraft Server Smooth! 🚀
This mod automatically cleans up entities on your Minecraft server to prevent lag. It does this at regular intervals that you can configure. You can also enable/disable and reset the timer with a command.
⚙️ How does it work?
The "Custom Clear Lag" mod works in the background on your server. Here are the key steps:
- 📝 Configuration: When the server starts for the first time with the mod installed, a configuration file named
clear_lag.jsonis created in theconfig/oas_work/folder. - 📖 Reading the configuration file: The mod reads this
clear_lag.jsonfile to find out:- ⏱️
time: After how many minutes the cleanup should be performed (default is 5 minutes). - 💥
command: Which command should be executed for the cleanup (default iskill @ewhich kills all entities, be careful!).
- ⏱️
- ⏳ Countdown: The mod counts the time elapsed in the game.
- 🧹 Automatic Cleanup: Once the configured time has elapsed, the mod executes the command defined in the configuration file. After the cleanup, the time counter is reset and starts again.
🎮 How to use it?
**🛠️ Configuration (optional but **recommended):
- 📂 Locate the configuration file: Go to the
config/oas_work/folder of your server and open theclear_lag.jsonfile with a text editor. - ✏️ Modify the settings:
"time": 5,Change5to the desired number of minutes between each cleanup (e.g.,10for 10 minutes)."command": "kill @e"⚠️ VERY IMPORTANT: The default commandkill @ekills ALL entities (items on the ground, animals, players…). You MUST change it to a more targeted cleanup command. For example:"/kill @e[type=!minecraft:player,distance=500]"(Kills all entities except players, more than 500 blocks away - adapt to your server)./minecraft:kill @e[type=!player,tag=!keep](Requires tags to protect certain entities, more advanced).
- 💾 Save the
clear_lag.jsonfile. 🔄 Changes are applied immediately, no server restart needed!
- 📂 Locate the configuration file: Go to the
🕹️ In-game commands (for server operators):
Open the server console or the in-game chat (if you are an operator) and use the command:
/cclearlag/cclearlag stop <true/false>:/cclearlag stop true🛑 Stops automatic cleanup./cclearlag stop false✅ Reactivates automatic cleanup.
/cclearlag reset <true/false>or/cclearlag reset:- 🔄 Resets the timer. The countdown to the next cleanup will restart from zero. The
true/falseargument has no effect here, onlyresetmatters.
- 🔄 Resets the timer. The countdown to the next cleanup will restart from zero. The
📌 Important Points:
- 🌐 Hosting Compatibility: This mod works on all types of Minecraft Forge/NeoForge servers.
- 🔑 Permissions: Only server operators (level 4) can use the
/cclearlagcommand. - ⚠️ Essential Configuration: Absolutely change the default
kill @ecommand inclear_lag.json! Use a more suitable command for your server to avoid deleting important entities (players, tamed animals, etc.). - 🔄 Instant Changes: Modifications to the
clear_lag.jsonfile are applied immediately, without restarting the server.
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21.4, 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 custom_clear_lag-1.0.9-neoforge-1.21.4.jar — drop this file into the mods folder
- Download size: 963 KB
- Download link checked 18 Oct 2026 — working
These come from our own check of the pack file, not from the source page.