Except your TV is LED, easier to see things in the dark scenes.I agree. I have the 65" X900H (I know, different models, but still) and the picture is stellar. I've played with settings a lot though, on SDR and HDR.
My 14 yr old and I have watched the first 3 seasons of Stranger Things the last few weeks, keeping the living room lights way down to 10% (Brown w/Phillips Hue) and it's looked beautiful. Season 4's first 2 episodes have had a lot of dark scenes and no issues seeing anything. I know you said it's been professionally calibrated, but are the Auto settings set to off (Black adjust, Contrast Enhancer, Local Dimming)?
And what is the deal with everyone watching Stranger Things??
I have already decided to get the 85” mini-LED Sony Z9K when it is released later this month, the A90J OLED is going in my game room and the 85” TCL 7-Series that is in there now will go to my daughter.
OLED is just not for me, I hate watching everything with the light off ( or on dim) or with the shades closed during the day, I love the sunlight here, benefit of living in Florida, did not realize how much the grey skies in Michigan during late Fall and Winter was making me depressed.