Hello. I have a problem. One GPU goes 10 mh / s slower. It is not a card or other HW. I replaced everything and the problem jumps to another card after reboot. This problem occurs when 4 or more cards are connected. I run 7 cards. All cards have a modified bios. The screen is connected to the motherboard. I run the cards on three 700W pc power supplies. This phenomenon also occurs with basic GPU settings.
The miner is Claymore.
Motherboard Asrock 110H BTC + bios 1.6
Intel ® Pentium ® CPU G4400 @ 3.30GHz AES processor
Thank you so much for your help.