Well I am seeing the same problem with buffering a times and no it is not my ISP. I have an unshaped account and I get the buffering issues and low dl speeds even when I use my private VPN that goes through enterprise servers. I take there are still some issues with server load at times.
Also having some issues with my Subscription not auto-renewing and not being able to resubscribe so at from a few hours ago can't even get on the platform.