if you are talking about wattman maybe you are undervolting..
and if yes, maybe you are goin "too low"!
Try to rise some mV the GPU voltage CORE/MEM
But i'm not undervolting.. I keep default setting. Same setting that in Win7 work. I think something on Win10, but I dont know what other way try.
if you are able to build a log with some error, why you don't copy and paste some lines of error here...
Another TIP: check your event view... maybe there are some info there.