Welcome into the Community and thank you for posting.
I'm osrry to read about the Netflix and buffering, this is never fun. I have been able to test the TiVo box and I can see that she's running well with some timeouts but I am unsure whether this is something to be concerned about. Can you please keep the box on for at least 24 hours
Also I'd like to ask if you're seeing this buffering on the other apps inside the TiVo?