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Performance Metrics: Server FPS

In Arma 3, “Server FPS” is a measure of simulation cycles, not graphical frames. It dictates how responsive the AI is and how accurately bullets are registered. A low Server FPS results in “desync,” teleporting vehicles, and unresponsive enemies.
Reading TimeDifficultyLast Updated
3 minutesBeginnerJanuary 2026

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Diagnostic Commands

To view the health of your server in real-time:
  1. Login: Authenticate as admin via chat #login Password.
  2. Execute: Type #monitor 10.
  3. Observe: Every 10 seconds, the server will print a status line.
    • FPS: 48 Mem: 2048 Player: 15

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Interpreting Values

  • 50 FPS: Perfect. The engine is running at its hard-coded cap.
  • 30-45 FPS: Standard. Typical performance for a server with 40+ players and AI.
  • 15-20 FPS: Struggling. AI will become slow to react. Driving may feel jerky.
  • < 10 FPS: CRITICAL. The server is overloaded. Expect mass disconnects.

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Common Culprits

If FPS is low, check:
  1. AI Count: Having 500 AI units active simultaneously will crush any CPU.
  2. Script Errors: Check your .RPT logs for infinite loops.
  3. Garbage Collection: Ensure dead bodies and wrecked vehicles are being deleted by a cleanup script.

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