I was thinking about building something like this based on Jitsi. But I got 20% CPU utilisation on a 2GB/1Core Hetzner Cloud Instance with only three Test Audio

I was thinking about building something like this based on Jitsi. But I got 20% CPU utilisation on a 2GB/1Core Hetzner Cloud Instance with only three Test Audio Connections. Wonder what's going on. I already tried to switch off logging but it didn't help much. Do you have Data how much resources you need to host this?