Interesting take. I've always experienced caching issues of the video buffer not buffering correctly. This has happened ever since they introduced 1080 content. I generally only go to 720p if I ever want to actually finishing watching the video.

It could be that their servers just cant keep up with the 1080p feed. It would need a thorough investigation to get to the bottom of it.

However, there is one great feature with their new player.

I have 3 monitors and when I fullscreen a video on one monitor, I can continue watching it and click away and work on another monitor and it is still maximized.