π Lag Detector β Find Whatβs Slowing You Down
See exactly which mods, entities, or blocks cause lag β on both client and server! A lightweight and powerful tool to track performance issues directly in-game.
π» Client-Side Lag Analysis
Command: /whatsmylag
- Shows FPS, entity count, and top 10 nearby lag sources
- Displays mod name, entity type, distance, and lag impact (%)
- Ideal for spotting laggy builds, farms, or particles
π§ Note: If the mod is only installed on the client, only this command will be available.

π Server-Side Lag Analysis
Command: /whatsthisserverlag
- Shows server tick usage for the top 10 entities or blocks
- Displays coordinates, mod name, and performance percentage
- Perfect for diagnosing lag farms or overloaded chunks
π§ Note: If the mod is only installed on the server, only this command will be available.

π Features
- β Detects lag sources from any mod (Create, Minecraft, etc.)
- β Clear, color-coded in-chat display
- β Works in singleplayer and multiplayer
- β Client and server commands work independently
- β No setup β just install and type the command
π§© Compatibility
- Supports Fabric / Quilt 1.20+
- Works alongside optimization mods like Sodium, Lithium, and FerriteCore
π§ Perfect For
- Players who want smooth gameplay
- Server admins hunting lag farms
- Modpack developers testing performance
| Version | Minecraft | Loader | Download |
|---|---|---|---|
|
WhatsMyLag 1.0 |
1.20, 1.20.1, 1.20.2, 1.20.3, 1.20.4, 1.20.5, 1.20.6
|
fabric, quilt
|
Download |