I have a NGC-1 placed under my 4K Samsung 65” TV. If I play movies, with for example VLC, the movies are getting slow, and give a terrible image. If I make the window smaller on screen, the problem disappear. It is only on full window. If I stream the movie to the TV, the image is perfect, but then I don’t have subtitles (and we need them). This is why I suppose the HDMI port is to slow. I updated the Bios, controlled fur updates,... but nothing getting better. Anyone a suggestion?