Default [Q] Problems with Nwtflix - Grey pixels when streaming

I'm having some problems using the Netflix app on my Xperia Z. When I try to stream a film the screen is only grey and show colours. At the top of the screen the stream is streaming, but only the part that is supposed to be at the bottom of the screen. Subtitles are showing in the top of screen.
Also this part is grey and "pixly".

Does anyone else has these problems? My Xperia Z is both rooted and have the bootloader unlocked.

Thanks in advance!