After working 30s goes to 0 Sol/s and than crashes. 3x1070 + 3x1080 works in stock...
are you overclocking? the 1070 I received today to try out does the same when I push the graphics clock up to +200
otherwise with graphics +150 and memory +2000 I am getting about 19KSol/s with the 1070 at maximum power (drawing 145W @ 40C currently but in a very cold garage with fan 75%)