Am I Lagging?
by SSH
Am I Lagging? is a Fabric client mod that puts a small lag indicator on screen, built from ping jitter, CPU load, JVM heap usage, Wi-Fi signal strength and a server TPS estimate.
What it does
The indicator is a bar display: four green bars mean a good signal with little lag, three amber bars mean an acceptable signal, two orange bars mean slightly laggy, and a single bar in dark orange or red means laggy. The bar count is driven by whichever metric is currently the main cause of the lag, and a separate indicator shows which metric that is.
Five metrics feed the display: ping jitter, CPU load, the memory the JVM has allocated to Minecraft, Wi-Fi signal strength where it is available, and an estimate of server TPS. Players who want more detail can open the mod menu and switch to a real-time line graph, which stays less intrusive than a full debug screen. The mod runs on the client alone, so servers need nothing installed, and it is released under the Creative Commons Attribution Non Commercial 4.0 license, so it is not open source.
Key features
Four-level bar indicator
Bars change from four green to a single red bar as the connection and performance worsen, giving a glance-level reading.
Main-cause indicator
A separate indicator names the metric currently responsible for the lag, so players know whether to look at ping or frame rate.
Tracked metrics
Ping jitter, CPU load, JVM heap usage, Wi-Fi signal strength and server TPS estimate are all sampled while the game runs.
Real-time line graph
The mod menu offers a line graph of the same readings for a more detailed view of lag over time.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Spotting network lag
Jitter and signal readings help separate a connection problem from a slow machine during online play.
Watching a heavy world
CPU and heap readings show when the game itself is struggling, such as during large builds or big farms.
Who it’s for: Players on Fabric who want a compact lag readout on screen while playing single-player or multiplayer, without a full debug overlay. The mod has been tested on macOS; its behavior on Windows is not confirmed.
Questions
Does Am I Lagging? need to be installed on the server?
Which Minecraft versions does Am I Lagging? support?
Can the indicator show more detail than the bars?
In the catalog
Am I Lagging? is one of 17,631 Equipment mods on ModsFinder, and one of 8,894 Equipment mods for Fabric. 19,862 mods support Minecraft 1.21.11.
More from SSH
Similar mods
What the author says
This is a simple mod that shows if you are lagging or not. I looked to see if a mod like this existed and I found a few that only mesure ping but I wanted to see everything. This tracks: - FPS - Ping - Ping jitter - CPU Load - JVM heap usage (minecrafts allocated memory usage) - Wifi Signal Strength (when possible) …
Official listing
- Modrinth page
- modrinth.com/mod/am-i-lagging
- Owner
- SSH
- Published
- 2026-01-12
- Updated on Modrinth
- 2026-07-22
- Facts verified
- 2026-10-15