In short, we need a bit more information as noted in the link above.
Have you tried deleting the channel, rebooting the Roku, and then re-adding the channel? Also for the sake of testing, go to your Netflix account on the web, remove linked devices, and then re-link them. Please note both of these may/will require you to re-authenticate the account.
C. Shawn Smith
Cool, thanks for the link. I just followed the above and it didn't help at all. Here's the rest of the information per your linked post.
2) v4.2 build 114
3) When watching, the lips are not in sync with the movie. This is on my Roku4. I have a Roku3 and when hooked up to the same chords and TV it works fine.
4) Put on any movie/show from Netflix. Sit back and watch everything turn into a bad kung fu movie.
5) 100% reproduceable
7) Roku 4 - v7 build 8863
don't have the code
9) Wifi, 802.11 AC
10) Signal Strength = Excellent
11) Cable internet
12) 1080p resolution
13) Been subscribed to Netflix since 2004
14) Pioneer Kuro
16) Google OnHub