Hey, I have now setup a vswitch with MTU 1400 and now the performance is somewhat better but not great yet:
INFO: status: 3% (816.1 MiB of 20.0 GiB), duration 3, read: 272.0 MiB/s, write: 272.0 MiB/s
INFO: status: 4% (856.1 MiB of 20.0 GiB), duration 6, read: 13.3 MiB/s, write: 13.3 MiB/s
INFO...