Sony X800M2 is terrible.

[SpaceDandy]

I generally don't complaim about products but here there are too many flaws this what should be an intermediate-end Blu-Ray player. I saw only one vague comment of this on the net but I thought it was a single occurence and it was not meaningful. Oh boy was I wrong.

The X800M2 has serious issues with deinterlacing and video buffering. The internal deinterlacer (which is just yadif with 50p luma with 25p*2 chroma – the worst) will randomly crash/stop deinterlacing for a few second every now and then on selected scenes. I suspect Sony tried to implement a comb detection filter which simply does not work. So, out of nowhere in the middle of any scene, it may just give you blended fields then deinterlace again. Back and forth.
I have also noticed strong flickering with faint black lines showing up on certain surfaces, which I never had before with my (now broken) Panasonic UB150 or Toshiba player. Checking numerous software deinterlacer on VLC and the likes and I could never get such bad results and artifacts.

I wish I could deactivate the catastrophic video processing of the X800M2, but of course you can't. It is there and there's nothing you can do about it. The only nice thing is the casing and the silent mechanical parts. Whoever handled the software for the video processing should consider a career change.
The UI is also questionable. Pressed "Menu" or "Audio" when the disc disallows it ? You get an entire overlay over the movie reading "Operation not permitted" for >5 seconds. Bloody hell.

TL;DR: don't purchase it if you plan to play ANY DVD or interlaced BD on it. It is just bad and probably can't even be fixed by upcoming FW updates.

All of these are not due to a single faulty unit. I already returned one player and the new one has the exact same issues. Even with the latest firmware.