It's not a CPU issue from what I can see.  Right now I have TeamRedMiner running on all 6 GPU's mining Chukwa.  It's using less than 2% of the cpu usage.   When I split the rig and put in my prior example, 5  Rx 470's on Ethash Algo mining Callisto, and put the 6th Rx 470 on Chukwa mining Turtle coin, the above posting screenshots are the errors I get.   Several posts up on my original I show the task manager window open.  CPU load at that point was only 0.3%