Yup all set correctly, 2.2 gamma, 120 nits luminance etc. and can make out all black squares on the lagomn display test charts.
This is on both my ips monitor and oled TV.
I would say if you're seeing some detail then it sounds like your gamma or/and contrast is too high.
2.2 measured across the entire greyscale range except it drops to 2.1 with 10 - 5% near black. Peak white is set to 140 cd/m2.