Damn one of my cards is dying out on this new algo, otherwise, the rest of my rx580 are hashing 880h/s with 1140/2200 900 voltage.
I noticed this today ... Kinda strange, not sure what's up with it. Thread 4 and 5 are slightly lower, because that's the card with the dummy hdmi in it, but thread 12 is way lower than normal. Not sure why that is. Something else to note ... With the old version of XMR STAK, I never got much above 11,500 h/s and all cards were looking normal as far as individual hashrate.
I guess you have 12 GPUs (0-11 thread) and the thread 12 is your CPU...