Will be testing a ASUS ROG STRIX B350-F GAMING AM4 soon.  Hoping to get 6 of the MSI RX Vega 56 going.
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We have almost 10 of ASOS ROG STRIX B350-F cards and Ryzen3 1200. We had some initial issues, but after flashing the latest BIOS we could just use default settings and 6 GPUs would work every time, no hassles.
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Please send me BIOS config as I have the saem setup and can only get 4 rx 580s to work