ModsJava
WAILT
I don't know my version or loader
Open the Minecraft launcher and look at the profile you play on — it names both, like fabric-loader-1.21.4. The version also shows in the bottom-right corner of the game's main menu.
No loader in the profile name? Then it's plain Minecraft, and these mods won't run — you need Fabric or NeoForge installed first.
Why Am I Lagging Tho is a mod designed to provide visibility into a servers performance (and connected clients)
Note: Versions 0.4.0 and above are NOT regular forge/fabric mods. This is a Java Agent, that needs to be applied via JVM arguments: -javaagent:/path/to/wailt.jar
Data is exposed via json over (secure) websocket, to be consumed by a webapp
Features
- Websocket / Web API.
- Optional Authentication.
- JVM Statistics.
- Memory.
- Thread counts.
- Level tick statistics.
- TPS.
- Mean duration.
- Network statistics
- Overall inbound/outbound.
- Per player inbound/outbound.
- Per packet inbound/outbound.
- Custom payloads (mod channels) inbound/outbound.
- Entity count statistics per Level.
- Overall per level.
- Grouped per type.
- Grouped per chunk.
- Block Entity tick statistics.
- Per type.
- Entity tick statistics
- Per type.
- Player join/leave events.
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.17.1, 1.16.3, 1.19.3
- 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.
Verified by MCModsHub
- Ships as WhyAmILaggingTho-1.16.5-0.2.1-universal.jar — drop this file into the mods folder
- Download size: 382 KB
- Download link checked 24 Sept 2026 — working
These come from our own check of the pack file, not from the source page.