# Arma 3 Server Lagging – Fix AI, Mods & Server FPS

Arma 3 server lagging or low server FPS? AI mods, too many units, bad mods, RAM full – Arma 3 dedicated server performance troubleshooting.

**Quick answer:** Arma 3 lag: **reduce AI/units**, **remove heavy mods**, **increase RAM** (12 GB+ modded) and check server FPS in admin panel.

**If you landed here:** Rubberbanding, delayed shots, server FPS below 20 or desync with many AI units.

## Related

- [Arma 3 performance](/en/gameserver/arma3/optimize)
- [Arma 3 won't start](/en/gameserver/arma3/server-startet-nicht)
- [Arma 3 won't connect](/en/gameserver/arma3/server-verbindet-nicht)
*Products & ordering: [Order game server](https://nexorahost.com/category/gameserver-1) · Manage: [panel.nexorahost.de](https://panel.nexorahost.de) · [My account](https://nexorahost.com/account) · [nexorahost.com](https://nexorahost.com) (Frankfurt · 1 Tbit/s DDoS · 99.9% uptime)*