PS4 blu-ray playback

[moviesforlife]

Hello,

I just bought a PS4 but am not overly impressed with the blu-ray playback. My old PS3 seemed to render sharper visuals and better sound. I have gone through the settings, selecting Linear PCM for the video game side while choosing Bitstream when playing blu-rays. Blacks look crushed and the picture just generally looks dark when playing movies like Gladiator. Any ideas as to why the PS4 might not look as good PS3? I tested same movie in my Xbox One and it was just as dark and muddy.

Any suggestions would be most appreciated!

Darrin