Indeed, our Windows 11 offline Steam box also needed to disable LG & Switch App in taskmanager, and set LG apps to manual start in Services.

Apparently the 3 applications have some sort of screen partitioning/sharing capabilities, but it is still unclear if the LG App was remote access or not.

So far, LG is earning a lot of justified bad press. Should have returned it when I had to turn off the screens power-save mode to get it to stop fading out randomly. =3