No unfortunately not. In fact using any VPN will slow down your internet connection somewhat. This because your data has to travel further (via the VPN server), and because encrypting and decrypting VPN data requires processing power. And the further the VPN server you connect to, the bigger a problem this becomes. If you connect to a nearby server (roughly the same continent as you), then you are unlikely to suffer any major slowdown or buffering. No matter how good the VPN service you choose is, you are likely to have problems streaming the UK's BBC iPlayer in HD from Australia. Such are the limitations of physics. Fortunately, most services these days (including iPlayer) will automatically adjust playback quality based on connection speed to ensure users do not experience buffering problems. This can cause lower picture quality, however.