Has anyone else a problem with random blackscreens on PS4 Pro with a 4K TV?

Hello,

I just bought a Samsung UE55MU7079 a few days ago and connected it to my PS4 Pro.

It's working fine in 2160p 60Hz RGB HDR mode, except that its somehow losing connection every now and then.

I'm playing for like an hour without any problems and suddenly the screen goes black and sound is gone and ~1.5-2 seconda later picture and sound are back. This also happens randomly, for example 2hrs ago it happend 3 times within 10 minutes.

TV firmware is up to date, I also installes PS4 Firmware 5.01 because I hoped it would fix things, but it didn't.