If you are running MSI afterburner, close it (using the "X") after the miner starts, I have a rig of 1060 and afterburner caused my rig to freeze, also, if you run less than 4 GPU's, try using EVGA Precision XOC.
My first rig with 6x Palit GTX 1060 3GB works fine even with the afterburner running.
I also already tried running without the afterburner and without undervolting and overclocking but still the same issue.
. It gives me +6% hashrate more than Claymore.