I have recently purchased a pioneer vsx-933 av receiver I have connected it to a Philips 55pus6401 TV an Panasonic dp-ub320ebk 4k player. I keep getting the picture flickering and it also dissappears for a second. I have changed the cables and I still I have the same issue. Both hdmi cables are 18gps and the firmware on the receiver is the l as test version. Is this model succpestible to this kind of problem.