I've got an LG 4k set with HDR and Dolby Vision, and I'm having this same issue. I've had the FTV 4k stick on Auto switch since I first got it last Christmas and it was working just fine until recently.
I have the exact same issue on my LG E6, everything is HDMI 2.2 compliant and all HDMI cables are certified high speed etc, etc. Forcing 2160p restricts to HDR, leaving on auto wrongly drops menu resolution to 1080p and Netflix doesn't show 4k content (but allows Dolby vision), Prime etc switches resolution accordingly.
Issue still remains - currently impossible to get 4k + DV on LG sets.
@Redmadder, you were not using the correct HDMI ports, others in this thread are, so this is not a 'fix' for anyone experiencing the Netflix DV/4k issue being discussed here.
I Ifhave called Amazon, they blame Netflix, Netflix blames Amazon so I got nowhere. If anyone has found a fix for this please let me know, but my feeling is that this is a firmware issue that needs fixing asap...
Ok, I have the answer and it's bad news for all 2016 LG Oled owners... These TVs unfortunately are only able to accept a DV input at 2160p 30hz, not 2160p at 60hz. What's more the fire stick prioritises dynamic range (i.e. Dolby vision) over resolution.
That's why when we all select 'automatic' the Fire stick basically sends a 4k 60hz DV 2160p signal to the TV, the TV says 'no', then the Fire stick (instead of switching to 30hz 2160p and DV that it would accept) switches to 1080p 60hz DV.
The 2017+ LG models all accept DV input signals at 2160p 60hz.
So unless Amazon decides to support dynamic modes that would switch to DV 2160p at 30hz our dreams of Atmos/4k and DV are smashed :(
I talked to Amazon support tonight and the 4th person I was transferred to agreed to have a higher tier support person review this thread since so many are having the same issue. We will see if it happens .
You can see a load more results for this by searching 'lg oled no dolby vision over 60hz' in Google.
There is a workaround using the 'resolution selection' trick (hold rewind and up for 10secs - I think!) and then selecting 2160p at 24hz, it will make the menus sluggish but should fix the DV issue.
The annoying thing is it should just dynamically do this and it's not great to have to keep changing this according to source... If you have got this issues raised higher, please let Amazon know the solution and hopefully we'll get a fix...
I was having this issue kinda on a Vizio 2018 E series TV (new to me). I was getting 1080P on Netflix, and I also saw it on the Youtube app. As others said, Amazon Prime worked correctly, even their one DolbyVision show (Jack Ryan) lol. However, the status display did report HDR or DolbyVision, but 1080p. Confirmed it also reported 1080p on my AV Receiver (Yamaha RX-385). Just from viewing it, I somehow had almost convinced myself that it was just misreporting this, because the picture looked great and was getting the HDR/DolbyVision effects. I was comparing the opening of Mindhunter on the TV Smartcast Netflix App vs. the Firestick 4K app. For me, the solution was to turn on "UHD Deep Color", it's in a weird place, Input settings, then there is a setting for each HDMI port. You can't change it unless something is connected to that HDMI port. I'm happy now and I am getting 2160p even on the home interface.
Hi, glad you got it fixed but if you read the thread this is not relevant to this topic as the issue happens when every component is correctly setup, including certified cables, deep colour turned on etc. It is an issue that some TVs (2016 LG Oleds) are limited to 2160p 30hz DV. And cannot display 2160p 60hz with DV. The Fire TV, instead of defaulting to 2160p 30hz & DV for Netflix, prioritises frame rate, so instead it shows 1080p 60hz with Dolby vision by default. Something which Amazon should fix.