Hello, I am writing to you from Italy, I had the same problems described here, slow remote control, apps like youtube lag or block for no reason, the continuous pop up of the messag “ethernet cable inserted / disconnected”, in short, a total mess. thanks to this procedure I solved the problem on my LG 55UJ750V. Maybe I also understood why LG has never given us an answer, I have worked for years in the assembly of electronic equipment and what I have seen in the boards and connections looks like the work of an unskilled worker ... some flat cables badly connected and a fixing screw was missing… in short LG could not help as they could not admit their low quality assembly…
