Gluetun + qBittorrent fails after sustained download
I have set up my Raspberry Pi 5 with Ubuntu Server, and have installed gluetun and qBittorrent via docker. Initially, they work great and I get decent download/upload speeds. However, after some time, the connection completely drops and the only way I've been able to solve it is a complete reboot, after which downloads continue normally for a short time until it hits issues again.
Something unusual also happens - after the downloads stalling, the Pi seems to lose ability to connect to anything else. I can't even ping my router from my Pi, even if I docker compose down both gluetun and qBittorrent.
I've tried some AI-assisted troubleshooting, but I can't seem to get anywhere and I've sent quite a few hours trying to resolve this. Has anyone found a solution to something like this before?