I’m experiencing this issue on my Xbox One S. With the new update, when I’m playing TV shows primarily you will see subtle stuttering or what appears to be frame drops.
I haven’t noticed this issue on movies just with TV shows. I never had this issue with the previous version of the app, everything played smoothly. It’s not visible all the time but most notable when watching something that has fast movement.
The problem also seems to be worsened when resuming an episode in the middle as opposed to starting an episode from the very beginning. It’s almost as though it’s trying to catch up to its previous place and is stuttering in the process to resume smoothly.