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Low hashrate on old cards

Just getting back into mining. Flashed the bios with versions I’ve used in the past to sit at 28mh, 80w, and 60% fan at 60C. Now, I can’t get them past 23mh on Hive and they’re all running hot with the fan at 80+%. I had 1 Hynix card running at 28mh on Nicehash last week
When all 5 are running, its pulling about 770w from the wall, with only 3 Hynix it varies from 550-600w.
Most of the time I can’t even get my Samsung cards to mine, this was one of the few that they registered and began mining.
I’ve searched the forum for other answers and followed all advice to no change. I’m stumped.

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