Hi. I am currently paying for a monthly VDSL broadband plan which advertises a maximum speed of 50mb/s. My broadband, however, only reaches an average speed of 4mb/s download and 12mb/s upload according to a test. Is there anything common that could be slowing it down so much? There are usually only 3 devices connected streaming videos at hd, but even as we all switched to lower qualities, the slow speed remains constant. Any tips on how I could fix this? Any advice? Thanks.