I'm loving season 5, too bad it's going to be the last one because the episodes are getting better and better!
And in response to the review of rcls0053 I would like to say you're wrong. You can't just assume time is linear in the pocket universe and calculate "how much faster it's going". Because it's a place outside our universe the laws of physics and therefor also time, might behave completely different there in ways we perhaps aren't even capable of understanding. So no mistakes, just another great episode!