I love my Tivos and wouldn't want to be without them but seriously, I found it a lot less frustrating to just use either a Blu-ray player (I have a Sony) or a Roku 3 for Netflix. It's so much faster and I have yet to have a problem using either of these.
When I went to Netflix through either of my Tivos it was slow and there was always this initial period of pixely loading - whether it was the beginning of a show or any time I paused and then came back - that I thought it was my network or my DSL connection. But I haven't had any of the problems at all with the same DSL, same home network, just using the Blu-ray or Roku.
If only I could get 'On Demand' through my Tivos life would be complete.