As stated I have been having issues with my Fairly new Sony 4K player. I have returned two of them to date and as I'm posting this up now the 3rd one is doing the same thing as the other two have. When playing a 4K disc it will Freeze would have to hit Fast forward or reverse or mostly stop power off and start playing a disc again. This one I was streaming Netflix All of a sudden unit Froze up streaming. It won't power off or Eject the disc. I had to unplug the power cord than power it back on to get my music cd out the tray. It will be returned for a full refund this time. I have read some reviews from others who have had these same issues with Sony's 4K UBP-X700. Dam the bad luck! Thing is I really like this unit Fantastic player for the coin. But not Reliable for me anyways. Buyer beware.