Hi, I think I have the same issue. Rig upgraded to the newest update and one of my RX470 Hynix (out of my 8x 1070ti & 1x rx470) starts to fluctuate after 1-2minutes. Hashrate drops from 23,9MH/s to 20,5MH/s and fluctuates 20-21,5MH/s. I didn’t change any settings. I’ve been sailing with this card at stable 23,9 MH/s. I’ve checked OC settings with amd-info and it looks like Core State and MEM index settings are not applied. I’ve set Core State 5 and MEM index 2, but amd-info shows Core State 1 and MEM index 1. Agressive mode is enabled, when I turn it off Core clock fluctuates from idle to 1000MHz.
Any help ?