I have 11 rx580 rig, simplemining shows in core/mem column only 10 cards, besides that, overclock value of 10th card is switched with 2nd card.
Overclocking memory MHz set: 2070,2025,2025,2025,2025,2050,2100,2040,2000,1975,2025
Core/Mem shows:                  2070 1975 2025 2025 2025 2025 2050 2100 2040 2000
C//fan shows all 11 cards. Rig works normally, but is overcklocking applied correctly?

sorry for bad english