I'm experiencing steadily dropping bitrates whenever I try to listen to BBC streaming radio on their website; it usually starts out around 100-110kbps, then levels out at about 67 for a while, but still slowly decreasing after this point; once it dips below 64 it starts to gets unlistenable. if I stop and reconnect to the stream it'll start over at 110ish again.

anyone know what causes this?