After a lengthy period of excellent consistent streaming speeds, my Internet has suddenly gone to hell. It seems to have been getting progressively worse, especially the last few days. Today it was down to around 10 Mbps download, now it has dropped to 5 Mbps. When it goes under about 15 Mbps I start getting buffering issues, though officially that shouldn't happen. This is the worst I have experienced in a long time. Is this just my 4G RBI or is there a wider problem? It doesn't seem like mast congestion since it has also been bad when kids are in school. Normally I get around 25 Mbps or better. My ISP is Netspeed which resells Vodafone. Can anyone shed any light on this?