I currently have a Windows 7 Pro machine with 2 MSI R9 390's. The first one will mostly stay at 100% load, but the second one is constantly fluctuating causing my hash-rate to drop. I have a SeaSonic Gold PSU with 1050 watts. I am using Catalyst 15.12 drivers with Claymore's Duel Miner. When I first start hashing I can maintain an even 33Mh/s on each card. Then, after a couple minutes I start to have these issues. The cards run between 180-200 degrees F, which is within tolerance. My CPU is an Intel i7-6700K. This is my start up command "setx GPU_FORCE_64BIT_PTR 0 setx GPU_MAX_HEAP_SIZE 100 setx GPU_USE_SYNC_OBJECTS 1 setx GPU_MAX_ALLOC_PERCENT 100 setx GPU_SINGLE_ALLOC_PERCENT 100 EthDcrMiner64.exe -epool ethermine.rocks:8008 -ewal 0x556763e733C55534eD6a12D17a91E5D435f6921d -epsw x -eworker Alpha -mode 0 -etha 0 -ethi 8 -dpool stratum+tcp://yiimp.ccminer.org:4252 -dwal DsZjUTPGGE8QsFyU2nnQ8F7pBFtU8qo7qMK -dpsw x" Any insight on this is appreciated. Additionally, I am offering 2 ETH if your comment/suggestion resolves the issue. Image of the issue http://i.imgur.com/mdNWflr.jpg
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