It is nothing to do with service....its all about bandwidth.
if your having issues you have some services, app, or update, pulling something from somewhere on the internet in the background.
i always click use the old player......this uses much less Kbps.......for example, a commentary needs/uses 156kbps minimum on the old player....on the new one it wants about 1Mbps.....on the new, if you are surfing other sites, it won't work well as you are interrupting a HQ stream all the time.