So I realize this is an old thread, but I still have similar stuttering issues with the ATV 4. Using Netflix, HBO or Plex, it all stutters every few seconds. The streaming quality itself is very good which leads me to believe this is not a connection issue.
I have tried resetting it to factory settings, but no change. I was thinking of sending it for service, but they made it clear that if they didn't find any hardware issues I had to pay for the check-up (and I do not think this is hardware-related). I was waiting for Apple to release a software fix but this has clearly not happened yet.
Anyone have any updates to this stuttering issue?