I would suggest trying to change the riser. I have found risers to be the cause of MANY of my problems. They are thrown together as cheaply as possible, and so they can have a large effect on the stability of your system.
You can try swapping riser 0 with riser 1, and riser 4 with riser 5, and see if that changes the fault to the other gpus. Just some thoughts
I solved the issue.
It was only caused due to instable OC settings even when the GPU’s did not die in TeamRedMiner. Since i am running higher voltages, everything is fine.