Constant buffering

Hello. In the last few days I haven’t been able to watch any streams. I choose a stream, it starts, but few seconds later it starts endless buffering, unless I restart the stream. Then it goes again for a few seconds and starts buffering again. It’s literally unwatchable. It happens with every stream I’ve tried.
Any tips how to fix that ?

This forum is for 3rd party developers. I’d recommend contacting support at http://help.twitch.tv.