Radeon RX 580 8192M SK Hynix H5GQ8H24MJR, 115-D000PIL-100

Hello everyone, I’m new in this area and I’m facing this problem. I have 8 cards as indicated above. I used Polaris to change the bios with the one-click timing patch. The performances are irregular ranging from 30 to 4 and consumption is around 140w. I tried some settings in oc but I can not improve the situation.
1 gpu instead is always on 4 … Someone can give me a hand … Thank you very much

I write for those who had the same problem, I have a MB b250 mining expert, in the bios I modified the Gen2 option, so all 8 cards are stable.

Hey would you be able to give me your bios file? im having an over heating issue and the card says it is a rx480 for some reason… would love to try a different bios
thanks in advance if you see this