Yes Netflix has some problems, even I am not able to watch any Dolby Vision content due to those Horizontal Flickering Lines/Noise appearing at bottom, don't know why Amazon Team is so useless, whenever I am raising a ticket they are closing it and saying that it must be closed due to some miscommunication, and everytime I call them they keep me on hold for 10 to 20 minutes and then say we'll connect to you within 48 hours to get this resolved, and no one calls me back even after 4 days, now it has been over 25 days still this issue has existed and there has been no update on Fire TV Stick 4K from last one month.