I can confirm my 6-series TV updated to Roku 4182-88. Netflix is still the same old version which is 5.1.81188087. I will test it out tonight. I only see the streaming issues at night when there's lots of internet congestion from everyone streaming. It's usually solid during the day. Very interested to find out if this was indeed a Roku issue since there was no update to Netflix....
I realize this is only ONE test but I was able to watch a whole episode of Ozark last night in Dolby Vision on Netflix on the TCL with 0 buffering issues! First clean stream in a very long time on the TCL!!!! So it looks like the ROKU OS update may have fixed things potentially!!!
All other apps work fine, wireless connection is plenty fast, Netflix, if it will even run, sticks at 7% when trying to load any show. Connected laptop to TV and streamed on Netflix web page with zero problem.
Deleted Netflix app, reinstalled, unplugged TV, did a factory reset - tried it all.
This thread claimed it's solved but I assume it's still an issue for many?
My TCL Netflix continues to be rock solid after the recent Roku OS update. I have seen one audio glitch but no more pauses. Huge quality improvement. For those with 6-series I would make sure you have the latest Roku OS. That new version from last week did the trick for me.