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Performance Metrics: Server FPS

In Arma 3, “Server FPS” is not a measure of graphical smoothness, but rather a metric of simulation cycles per second. It dictates how frequently the server calculates AI pathfinding, projectile trajectories, and network synchronization. A low Server FPS results in “desync,” causing vehicles to teleport, bullets to fail to register, and AI units to become unresponsive.

Difficulty

Beginner Friendly

Time

5 Minutes

Diagnostic Commands

You can monitor the health of your FREAKHOSTING server directly from within the game client.
1

Authenticate as Admin

Open the in-game chat and type:
#login YourAdminPassword
2

Initialize Monitor

Type the following command to begin tracking performance at a set interval:
#monitor 10
(The number represents the update interval in seconds).
3

Analyze the Output

The server will print a status line to your chat console: FPS: 48 Mem: 2048 Player: 15

Interpreting Server Health

Use the table below to determine if your mission is running optimally or if the server is overloaded.
FPS ValueStatusExperience
50 FPSPerfectThe engine is running at its hard-coded cap. Minimal network lag.
30-45 FPSStandardTypical performance for a server with 40+ players and moderate AI counts.
15-20 FPSStrugglingAI units will become slow to react. Driving may feel jerky or “laggy.”
< 10 FPSCriticalThe simulation is failing. Expect mass “desync” and disconnects.

  • Excessive AI Counts: Having 500+ AI units active simultaneously will overwhelm even the fastest CPUs.
  • Script Loops: Check your server .RPT logs for recurring error messages. Infinite loops or heavy scripts running onEachFrame are common culprits.
  • Garbage Collection: Ensure your mission has a cleanup script to delete dead bodies, dropped weapons, and wrecked vehicles.

Need Extra Help?

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Last Updated: January 2026 | Arma 3: Simulation stable.