BMCA_1 12.238k 9s 1,942 23,766,196 13.47THs 32m 27s 0.206% 0.015% 13.57THs
BMCA_2 11.543k 1s 2,114 24,401,902 14.85THs 32m 27s 0.095% 0.016% 14.23THs
BMCA_3 12.339k 2s 1,946 24,011,694 13.85THs 32m 27s 0.051% 0.016% 13.60THs
Total: 3 (3 active workers) 6,002 72,179,792 42.17THs 0.117% 0.047% 41.40THs
PCI-e slot seems to have resolved invalid and lower performance, however, as I've asked in the past page of this thread as well, is #2 sharing more due to being on a lower difficulty? And as such, is it making more $? Or does it balance based on difficulty of said shares?
Some machines just work "better" than others. I wouldn't worry about it.