Very good choice im on philips OLED 854 with ambilight too very immersive 
First your HDMI wire must be : 2.0a or 2.1 not 1.4 because you will be limited principaly in the color depth from your HDR.
Second: you must enable your HDR on windows setting right click on the desk :
Since you have philips you do have very good motion compensator so you can put in your Tv settings the motion compensator to maximum then turn your screen in nvidia setting to 30Hz.
After that click on apply then change your
- outpout color depth to :12 bpc
- outpout color format to : RGB
- outpout dynamic range to : FULL
Apply , run your sim in fullscreen and enjoy ( the sim will be limited to 30 fps but it will be like 60 fps )
( sorry for my bad english )