In case this is of use to anyone, I called John Lewis about my new LG OLED55CX5LB (2020).
they said they would replace as it’s been less than 30 days but I could speak to LG and I did. The tech support guy was aware of the wired connect/disconnect pop ups that I was getting and said it was the WiFi module incorrectly kicking in and overriding the wired connection and it could not be fixed. He said he has seen it happen often in older machines but rarely in new ones. I ordered a replacement and we’ll see how it goes.
it does suggest to me that using WiFi instead might work, and also if you can manage to switch off the pop ups (I was advised you couldn’t ) then at least you won’t be distracted as it doesn’t seem to cause any viewing issues, probably as the stream is buffered.
