I was posting a while back that I've got stability issues on mixed polaris 570&580 rigs.
Somehow similarly I have one miner with 8*570*4GB Asus (boxy looking and not the Strix one) and 4*580*8GB Nitros
It was just giving me pain - miner was crashing probably every few hours (the only one out of 10+ of the similar build, except the mixed 570&580)
In some logs I could see that GPU0 (my display card) would fail so...I had a display dummy also mem (I think Elpida) set at 1920
So I rolled back to 11.2 removed the display dummy and increased the mem clock to 1950 and now it's fine.
You have upto 10% incorrect calculated shares (third number after hashrate). That's ridiculous high! Very too much oced would i say. Should be 0 (or maybe ~0,1%).
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