said by resa1983:
It has been really odd because you can watch a video that buffers perfect, followed by a video that won't buffer at all, followed by another video that goes perfect..
I find if I try to replay a video later that didn't buffer earlier, it still doesn't work.
yes, i would also have videos that would just stop buffering entirely 20-50% in requiring me to refresh the page and it usually fixed it. these seem to all be signs of broken caching.