I flashed both of my Sapphire Nitro+ rx470 GPUs both with samsung memory. When I plug each card into the motherboard by themselves and open claymore they mine at a steady 28 MH/s. Never less never more. When I plug both into the motherboard at the same time however, one mines at a steady 22-24 while the other continues at 28 MH/s. Any ideas?
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