A tip for LG CX (and older gen top range model owners as well, maybe):
I find that when watching UHD content the Cinema Home (for rooms with ambient light) setting is superior to Cinema (for fully darkened room) due to the slightly brighter picture. Even when watching both in a darkened setting. But! with default settings, Cinema Home has the TruMotion setting Cinema Clear turned on, and you cannot switch it off. Unless you follow this tip
General setting > AI Service > switch off Auto Genre Selection. You can now switch off Cinema Clear in Cinema Home. CINEMA!
(And no, copying settings from CH to C won't do it - C will stay darker by default.)