I used to host an Arma 3 server using Kubernetes, I had a scalable set of headless clients to distribute the AI load. My friends called said it was the smoothest server they ever played on despite using hundreds of AI groups. With Tailscale I wouldn't have needed host networking enabled on the Pods, come to think of it.

What do you mean by AI groups in this case?

The CPU controlled squads of enemy soldiers and vehicles the players shoot. Arma is a first-person shooter game. The game engine it uses is not heavily multi-threaded, but the multiplayer system has some weird quirks that you can exploit to distribute AI processing across multiple networked instances, either in a multi-core or multi-machine topology.