My machines were no "Bed of roses" either, but you won't hear me complain...
I got them running just fine.
You could always decide to wait until they are perfected before you buy...
I, on the other hand, am glad to be a Beta-tester, Guinea pig; and fully
understand that there will be problems that arise in such a "rush to market"
circumstance....  IMHO, anyone with half a brain should realize that.
People in here seem to just "pick apart" every little thing that's not just perfect....
IMHO the PSU Corsair model HX850 is a substandard one. They offer other models that work fine.
I personally always buy bigger anyway.

BTW... They recommended 80+ Gold, not "Generic"