Dolby Vision not working - From apple tv to philips hue sync to LG TV UH7700

I've tried to use Dolby Vision 30hz, 24hz and 25hz and they won't work when the "Dolby Enhanced Compability" feature on Hue Sync App is active. When I deactivate it, my tv starts recognizing Dolby again but the lights stop syncing with the hue device.

I've tried to contact Apple Support with no sucess, also Dolby Vision doesn't have a customer support for this.

I am surprised that no one noticed this issue...

Hi here is an extremely detailed explanation of what is going on:

Hi Thanks for responding... Yes I tried to update the hue sync box, I've used two different cables:

Rocketfish™ - 1.5' 4K UltraHD/HDR In-Wall Rated HDMI Cable

https://www.bestbuy.com/site/rocketfish-1-5-4k-ultrahd-hdr-in-wall-rated-hdmi-cable-black/2059068.p?skuId=2059068

Belkin UltraHD High Speed 4K HDMI Cable (This one is even Dolby vision compatible - it says in the box)

https://www.apple.com/shop/product/HLL52ZM/A/belkin-ultrahd-high-speed-4k-hdmi-cable-2m?fnode=d7d175e7afc411c7a0bea76ae78a0dbdc97c9a683570658022046b4213d190dec5c598964ed48a250e5b84a1438fe741f47e3d4f5f40eb02a6c3a6509ffadf2c53ec23a59571111d5b54e664fa731a648fcaa98b3c56133bc14d2645f6881e84

I've also tried to reset my apple tv, reset my Hue Sync Box, change internet set up, update my TV firmware and no success.

Let me give you the three possible scenarios that I can test:

1- The issue is that apple TV recognizes dolby vision only when the option on the Hue Sync app under advanced settings "Dolby Vision Enhanced Compatibility" is off. But the moment that it turns the settings to Dolby Vision, the Hue Lights Sync stops syncing. The lights will only work when the content is 4k HD or HDR. These are the main things under this set up:

*Dolby Vision Enhanced Compability turned on (Hue Box)? No

* Image on the television? Yes, it correctly recognizes HDR and Dolby Vision

* Lights syncing? Not when Dolby Vision is showing on TV or selected as default option on Apple TV

*Dolby Vision works when 4k HDR is on with match content or at any Dolby Vision format? Yes but lights won't sync

*Connected to port 2 or 4 on phillips Hue? Yes (also tried different ports as well)

*Cables used: Both RocketFish and Belkin listed above. From both Apple TV to Hue Sync and Hue Sync to TV

*Dolby Vision Formats available on Apple TV Video Format settings: 1080p (all frequencies), Dolby Vision 4k (30hz, 25hz, 24hz)

2- Connecting directly to TV without using Hue Sync Box. Everything that happens on scenario 1 happens here. Obviously the lights won't sync because the hue sync is not connected.

3- When I turn on the option on the Hue Sync app under advanced settings "Dolby Vision Enhanced Compatibility", the lights go back into syncing with the image but the TV doesn't recognize Dolby Vision anymore.

*Dolby Vision Enhanced Compability turned on (Hue Box)? Yes

 *Image on the television? Yes, but it only recognizes when it is HDR. When it is dolby vision the TV shows the image either in HDR or HD (not Dolby Vision)

* Lights syncing? Yes

* Dolby Vision works when 4k HDR is on with match content or at any Dolby Vision format? No, but lights will sync

*Connected to port 2 or 4 on phillips Hue? Yes (also tried different ports as well)

*Cables used: Both RocketFish and Belkin listed above. From both Apple TV to Hue Sync and Hue Sync to TV  

*Dolby Vision Formats available on Apple TV Video Format settings: 1080p (all frequencies), Dolby Vision 4k (30hz, 25hz, 24hz) Apple TV ALSO IDENTIFIES FREQUENCIES FOR DOLBY VISION ABOVE 30HZ, that my Tv doesn't support (40hz, 50hz, 60hz)

Bottom line of option 3 - I believe that there is a misconnection between the hue sync box and apple tv when the dolby vision enhanced capability is on. It gives the info to apple tv, which is saying that my tv is capable even with dolby vision on 50hz, 60hz. Any selection of variables on option 3 doesn't make my TV recognize Dolby Vision, however I can force it to be HDR which works on scenarios 1 and 2 (it recognizes HDR and the lights sync).

I've talked to Philips with no success and with LG (who told me that the issue is not with the TV). There seems to be an issue of integration with apple TV or a problem on device.

Hope this is clearer.

Funny thing is that on option 3 apple TV is giving the options (that don't work obviously) for Dolby Vision 40,50 and 60hz

Yes I've tried everything you mentioned on your comment. PLease see my previous comment for more details.

I've contacted Philips Hue Support but they don't know what they are doing. No response from them.

Thank you