Lag² - Anti-Lag Machine Plugin
Stop lag machines before they crash your server.
Lag² automatically detects and neutralises common lag machines:
- Redstone clocks - temporarily disable, remove, or break laggy circuits
- Projectile spam - snowballs, arrows, eggs, and similar chunk-filling projectiles
- XP orb piles - merges thousands of orbs into fewer, larger ones
- Entity pileups - enforces per-chunk entity limits for configured entity types
Features
- Configurable actions - disable (safe), remove (clean), or drop (break & loot)
- Staff alerts with click-to-teleport - know exactly where lag happens
- Chunk inspection commands - view status, inspect chunks, and find the busiest hotspots
- Lightweight & efficient - minimal performance impact
- Permission levels - staff access can be split by role instead of requiring OP
Commands
| Command | Description |
|---|---|
/lagsq status |
Shows tracker and limiter activity |
/lagsq top [count] |
Lists the most active loaded chunks |
/lagsq inspect [world] [chunkX] [chunkZ] |
Inspects a chunk or your current chunk |
/lagsq reload |
Reloads the plugin configuration and services |
Permissions
Lag² now uses integer-based permission levels with OP bypass.
| Permission | Description |
|---|---|
lagsq.level.1 |
Receive alerts and use /lagsq status and /lagsq inspect |
lagsq.level.2 |
Use click-to-teleport actions and /lagsq top |
lagsq.level.3 |
Use /lagsq reload |
lagsq.admin |
Full access to all Lag² permission-gated features |
Default required levels can be changed in config.yml under permission-levels.
Configuration
All settings are in config.yml. You can adjust:
- Redstone update thresholds and actions
- Projectile limits per chunk
- XP orb merging radius and limits
- General entity cleanup limits and removal behavior
- Alert sounds, coordinates, and teleport buttons
- Staff permission level requirements
Support
Made for server admins who want performance without compromise.
Please, if you have suggestions or have any bugs, report them on the plugin's GitHub page. It will be linked in the project. ~~~~
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.20.4, 1.20.5, 1.20.6
- 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.
Verified by MCModsHub
- Ships as LagSquared-1.0.1.jar — drop this file into the mods folder
- Download size: 46 KB
- Download link checked 22 Aug 2026 — working
These come from our own check of the pack file, not from the source page.