Здравствуйте, _ilya_, Вы писали:

__>А цвета — шик, блеск, красота — даже из коробки норм

Не норм. White Balance dE 4.74 — ужас.

__>а после калибровки там близко к идеальному https://www.rtings.com/tv/reviews/tcl/qm8-qm850g-qled#test_143

Не близко

but the brightest whites still show errors, and the TV's gamma is off from the reference target of 2.2 for a moderately lit room.

Ну и

The TV's viewing angle is inadequate. There's significant color and hue shifting as you move off-center, and the image looks increasingly washed out as you move further away to the sides. This isn't a good choice for wide seating arrangements.