Now the issue, I'm seeing a hardware error of 8.4% but it also states 19 rejected blocks. Hashboard 0 is showing 2.1% error and HB-1 shows 15.7% error

So the question would be, what constitutes these errors?

Next question, since ll 44 chips are running on both boards, hash rate on the master (assuming the master is HB-1) is 2Th/s while HB-0 is at 1.56Th/s, wondering why the drop in performance on 2nd board.