My 6x Vega 56 rig on Onda D1800 finally works like a charm.
Averaging 1940 h/s per GPU so just over 11600 in total, for 1350W at the wall.

For the records, that's better than my two 7x RX570 rigs combined (11200 h/s for 1650W), without any single bios, SOC or soft power play mods.

Those bloody Vegas really are good.

I only wish CastXMR would allow you to set failovers...