Just log the complaint and ask them to fix your set.
Recent firmware update for LG OLED65C8PUA several issuse.Has anyone else experienced this? Default Technicolor OLEDlight setting was and should be 80 now it is 25. Sound mode options are gone. Magic remote signal unstable with occasional message. Picture darkens over time and resumes when changing inputs. No one at LG seems to notice that it has a major problem with this update.