@gwen-dragon:
http://pl.ign.com/movies/12231/video/cult-of-chucky-zwiastun - no video, just audio playing
https://www.twitch.tv/videos/155805326 - video/audio set to highest quality freezes or stops completely after re-focusing tab (same with live stream) after some time. Open some stream or video on twitch, go to some other tab, go back to twitch tab after at least 10-15min. Video should stop or freeze after few sec.
Those sites with videos are only examples, ALL videos on ALL of those websites doesn't work correctly and has the same issue.
Win 7 64bit SP1