For several years now, Youtube has been working fine for me, but in the last week or so there have been many problems with videos not playing correctly. Sometimes it's one that was just played and I skip back to re-watch a certain section and it just hangs. Other times, the first few minutes will play then it just stops for no obvious reason. Going from full screen back to windowed will sometimes get it to restart, other times it will require reloading the page. Something has definitely been changed and is still not working right.