I've got 6 cards.  3 - Sapphire Nitro+ RX 570 and 3 - Sapphire Nitro+ RX 580.  I'm starting on the 570s first.  I've got 3 installed with the radeon 16/17 driver trick and it works fine until I use polaris bios editor.  I have micron memory and I'm using the 1750 2:xxxx straps.  If I have one card or 3 I get a code 43 on all of them that I have modified the bios.  I can revert back to the original and the code 43 goes away but my hash goes back down to 24.
 What am I missing?