Are you actively cooling the sticks?
I am, and it so happens its a USB Arctic Fan. So its another amp draw on power source. I remote into miner, so I can still see the 1 stick is still running. Im guessing 8amp brick power supply was never intended to power this many stick miners. So solution maybe to connect using alternative PC powersupply 8 pin connection. Will report back in a few hours as to 1 stick status.