I wanted to get back to this. I still have no resolution and the conversations with the customer service rep (who I'm assuming is in Asia because they only answer in the middle of the night) have been odd, difficult and devolved into not helpful.
They had me screen record the problem, and, oddly as most of us know, you can't do that on itunes, so I had to get out my ipad, record, import, shrink the file so I could mail it, and then send it off. THEN they told me I had to send it to a different address.
Then I got several weird "did you update your machine", and "have we solved your problem yet" etc. kind of emails, after they'd already told me to do all those things like update my itunes and safari (it's not a safari problem)...
I got the feeling some of the responses were bots.
While the person who's helping me "Marjorie" has good English, something is getting lost in the translation and several emails later I now understand they want me to type out in a very specific sentence format which episodes are having the problem and from exactly what time to what time. Apparently telling them the episode name and saying "it's the entire show" is not good enough for them (again, I wonder if this is a bot).
And it's not just Outlander, a few other either recently downloaded or old and re-downloaded episodes of different shows are doing the zoom thing, but not all.
So now they're being nasty saying they can't help me unless I list each episode the way they tell me to and are now suggesting it's a problem with my machine or cables or something.
I really don't have time for this, so, thanks Apple, I'll buy my videos elsewhere.
It stinks (apparently I can't use the word $ucks) that you outsource customer service for iTunes. I've spent thousands of dollars on TV shows and music over the last 10+ years and this is the CS I get? Nah.