Yes. My team is working with You!
We will give a try this evening, so be atempt to read this post later, maybe we have fixed the problem

Let me know. I also solve the problem. My solution is 5x 570 + 2x 1060 gtx for now.

5x29MHs + 2x 23.5 MHs per rig, works fine.
How did you get it? When we install 5x 570 it works fine, but if we reboot, sometimes it works, sometimes windows reports error 43, it isn't stable.
In ethOS or simpleminingOS, we need to activate 4g decoding to use more than 4 GPUs but it fails and it doesn't boot
Yes after the first or second restart again 43. I will restore the patch and immediately new patch application. Then everything works fine. Now I've done 3 restarts behind and it's still working.