I use Chrome.
I also have been using IPv6 for 2 or more years or since it was first made available from Zen. [Hard to keep track of time]
Sorry I wasn't thinking I had a problem with the service causing any issues with buffering I was saying out loud how I've noticed more since getting a service where it should definitely not be happening.
YT has been getting worse for ages. Amazon prime was also their fault I'd assume. I find it funny how these services have a blame hierarchy and that the first fault tier is "YOU or your hardware" Destiny game from Bungle does it as well. It's always something is wrong with your network connection when you know fine well it's them.