It seems this was already addressed here.
However, changing browsers has yet proven to be repeatable solve. Sometimes it works. Sometimes it doesn’t.
We have, like @oxdoc and a few posters on the linked topic, found that all other streaming servers work smoothly (YouTube, etc.). It is just this particular website that is slow, which sucks, because we LOVE it.
Cheers,
Nick and Sarah
YogaPowerCouple