I have a problem. I have a 6x rig with Sapphire Pulse RX580 8GB, using Win10 and the mining driver. GPU0 have 30,5 MH/s and the other 5 cards run at 28 MH/s. I using a start.bat, wich executed (with the highest privileges) by the task planer from win10. It works with 780W from the wall. Why does GPU0 run faster than the others?
I tried to start the start.bat manually via remote desktop and run as an administrator and get all cards at 30,5 MH/s. Clocks are always the same, but the power consumption raise up to 980W from the wall (-cvddc and -mvddc doesnt work).

What can i do?