Hey,
Any idea why would the card that is on usb riser and in main pci slot(biggest one) perform ~40% worse than other 5 cards? All on usb risers, 6x 480 4gb. First card making 65 while others are all around 120.
On eth, some time ago, it performed like other cards.
Did you reboot the system? sometimes I have that issue . one card just lags even on ETH .. 5 MH while others run at 29MH . Just reboot. Something is funny with driver and the thread gets stuck may be. I reboot using power cut for these instances rather than shutdown regularly. Hard power cut off on should get it kickstarted.