This may actually be an area where QD-OLED is better since black crush on the darkest nuances have long been a problem on WOLED. I've solved it by raising black stabilizer in game mode on my LG C2 and dark HDR movies looks much better now.Supposedly QD-OLED is supposed to mitigate this when compared to WOLED (white boost pixel) according to this blog article by Samsung itself. Kinda interesting read. How much of it is marketing hype? Probably some.
https://innovate.samsungdisplay.com...with-qd-oled-see-new-details-in-old-classics/