Yes, as you wrote, that doesn´t mean, that all colors on the whole Screen should be very vivid, or vibrant, but the color reproduction in those games is like through some grey filter. As you said, I saw this kind of behaviour in Tomb raider too, but yes, when you look into fire, it Looks nice (like in Battlefield V). The bright parts of the Screen, where Peak brightness is in game look good, but on the rest are the colors just faded. F.e. in Resident Evil 2, the main character has on his Body this bulletproof vest. This vest is in SDR much more black and in HDR is like through Grey filter (you can see this behaviour on the other colors too). In Forza Horizon too, the cars look good, but when you come to some yellow field, this color is much darkder as in SDR, in SDR is the yellow really juicy, vivid. I feel, that the saturation has to be improved in HDR Content, cause in SDR it has for me better contrast Ratio even though the whole Screen is brighter in all areas. It is possible, that these verstical dimming zones are the reason of it and it is not capable to make the picture right, I don´t know. When it is so, why look the youtuve Videos OK? Without any Grey filter, or so? Or other games like AC Odyssey? It is propably more complicated as we think, but I think, that we need some Firmware update here, some tweak inside the monitor for HDR.