Sorry for the bump but I'm suffering through this, too. Usually 5 min after boot my connection cuts out intermittently for a few seconds until it finally comes back in. Yesterday, it cut out and never came back. I tried three different HDMI cables and all I get is a black screen and no sound on my pro. Getting nervous that it might be something more serious. I've ordered some Monoprice premium HDMI cables and will try booting PS4 in safe mode tonight. I've had this issue since I first got my pro and I can't believe it's been over a year and there's been no fix on Sony's end. :\