I am experiencing the same problem. My rig was running stable for weeks before the Widows 10 Update crashed everything.
I have watchdog set. The rig will run for a few minutes, then crash because of a OpenCL call on a random GPU. It happens to a different GPU each time. The miner then restarts and the entire process happens all over again.
I tried going into the Widows performance settings and increasing my virtual memory from 16 to 32. This however did NOT fix the problem.
I am currently running (6) RX570's.
Does anyone have any recommendations on how to fix this?? Please??!