I have a similary issue with Dolby Vision.
OLED55C7v + RTX 2080 TI with last driver (also tested with an OLED65E9)
Posted full details here : https://answers.ea.com/t5/Technical-Issues/Dolby-Vision-BUG-Again-only-black-screen-when-leaving-the-game/m-p/8396533#M174
EDITED : Why My post with full details was deleted ??? OMG.
Seriously ??? I post in the right section : "technical issue" and you delete my post, why ???
General Discussion is not the right place for it ...
The game is launching fine, I can play in Dolby Vision mode ... but I if I ALT TAB, the screen goes black and if I leave the game, the screen remain black until I restart the PC ...
@EA_Barry
Why the dev can't fix this dolby vision bug ? (Remove the Dolby vision to use only HDR like they did on Anthem is not a fix, just a workaround ...)
It's a shame because this game in dolby vision is beautifull ... (a lot better than HDR)
Read my post linked above for more details ^^
Can't you work with NVIDIA and or Microsoft to fix this issue once and for all with Dolby Vision ? (It was working perfectly fine on Mass Effect Andromeda when i did the game ...)