Hetzner Datacenter in Falkenstein. Back then the pvestatd service was quite latency sensitive, which caused the PVE GUI to break if the storage did not respond quickly.
Works smooth like butter.
Anyway, back when this thread started the cloud pbs was barely usable from germany, now it's just a (push) sync job running in the background, not affecting PVE in any way.
Very happy to finally use this free offsite...