has anyone experienced gpu # 0 with zero hash rate? after a few seconds the miner will restart and will be stuck at open cl initializing. I have 7 rigs and only 2 rigs are experiencing this problem. I tried going back to v 10.5 but the problem persists! I did not have this problem prior to closing V 10.5 then running V11.0 with the same bat file. pls help.