Hello,
I have some problems with YouTube buffering, if I'm watching a video and I try, for example, to go back like 2 mins ago BUT sometimes even 5 seconds, the player most of the time have to re-download the video (something I just watched).
It is even worse if I just watched the whole video and I try to watch it again, Firefox has to download the whole video again.
Sometimes if I just let the video buffering it happens that it lose all the buffer and have to start again.
Another thing is that Firefox only buffer a little part of the video and then stop. I have to play the video and when it get closer to that part, at that moment Firefox start to download again.
So, It's kind of annoying because my Internet isn't really good to wait re-buffering again and again.
I this video you can see it better (in every try I just press F5, I don't change anything)
https://youtu.be/HbszRnib_gg
Thanks for your time