I had been using version 13.4ref prior to purchasing 13.5ref. I was amazed at how quickly 13.4 ripped and encoded, which was one of the reasons for the purchase.
With 13.5, I've noticed that often, not always, the encoding % stays at zero, sometimes for all 4 cores, for quite a while before starting to encode. Sometimes it doesn't even use multiple cores, though it has assigned a core to each of 4 files.
Could this be a bad install? Should I wipe everything and start over?
Note, that I looked at the usage factor for the cpu cores, and there is almost nothing else running to be using up all the processing capacity.