Got it now for Vega 56 - W10 installed, just use the Monero hints posted on reddit (Monero and Vega - the definitive guide), use Bios from Vega 64, AMD blockchain driver, use DDU before, if any driver was installed, after blockchain driver installation set in Wattman all voltages to manual, import the Vega_64_Reg_GPU_0000-1050HBM.reg, with OverdriveNT - adjust P7 1060 /865mV and mem P3 1090 / 875mV.
Got a stable hashrate of about 42,5 Mh/s on ETH with Claymore 9.8 with 230 Watt at the wall. Think that is the maximum actually....sadly not the 80...90 Mh/s as posted in any fake posts