I spent my 1st 8 months bake failing every 30 seconds or so...Initially I didn't know any better and thought it was normal. Eventually, I tried every solution anyone has posted online. Trust me, dozens of hours and more and still I continued to blur and rezz and blur and rezz.
I use Firestorm which has an option under preferences to change the appearance or "skin" of the viewer. I changed the one which I was using and the rebake/bake failing stopped. YAYYYYYY!!!!
I have not seen this solution suggested anywhere else, though maybe it is. I don't know why it worked, but it did.
Good luck to those with bake fail problems