Here is what i did

5x Sapphire RX580 Nitro+ 4GB Hynix

First of all i have installed drivers.  Win10-64Bit-Crimson-ReLive-Beta-Blockchain-Workloads-Aug23 from official AMD site

Then Bios.

Bios switch - little sitch on my GPU moved to the Outputs (hdmis dvi)

Then i flashed bios. the one from Anorkas site powersaving bios with little mod.See pic.



GPU& MEM voltage modified also TDP and straps are copied from 1:1500  up to 1:2000 and copied from 2:1500 up to 2:2000