Just set up a LG CX, it is only displaying 4k, 30FPS. I assume that is because of the rubbish generic HDMI cable that I am using, so I have ordered a HDMI 2.1. The main issue is that I tried to turn HDR on in the display settings on my PC then the TV no longer detected signal from the PC. I can still use the display when it is being duplicated with another display, but it won't work on it's own. I assume that it doesn't work on it's own, because it is trying to enable HDR again and my cheap HDMI can't handle that so it shows nothing, but I would like to set it back to just the TV for now. Would anyone know how to manage that (turn HDR off on a display I can't use, because the HDR is on)? TIA.