Recently bought this model and am wondering should I replace it. Normal bluray and dvds play fine but on the first few 4k discs I played, both discs froze even though I cleaned both discs before I put them in the player.However both discs did not seem smudged prior to cleaning so I wonder if the player is to blame. Sony support suggested unplugging device for 1 minute and changing the parental control settings? What on earth would these settings have to do with disc freeze? I will try another disc tonight and if that freezes I wonder should I bring the player back to the store, any ideas would be appreciated.