Well done @Claymore!
Have been testing the dual now for a few hours; eth on ethermine and Blake2s on Nicehash works fine. -dcri 50.

Experiencing this:
2x RX580 still at same ETH 30.6 stable (and 1530 Mh/s Blake2s) - no drop

But:
2x Vega56 flashed, eth drop of 2.5-3.0 mh/s (and 1900-2000 mh/s Blake2s)
2x Vega64, eth drop of 2.0-2.5 mh/s (and 2100 mh/s Blake2s)

Maybe I should try individual -dcri for my cards?
Any suggested settings for Vega cards?
Thanks!