Have something to add to the explanation? Sound off in the comments. Again, this is possible, but unlikely, mainly because you would expect either a much smaller or much greater difference in speed. It could be that the VPN is using UDP while your download would typically use TCP, and different optimisations (MTU, for example) are allowing better use of your connection. There are some other possibilities, but these are again less likely. By using a VPN, your traffic is being given priority or not being capped, so you are getting better speed.
It could even be by content/payload, but that is less likely.
The ISP is shaping certain kinds of traffic, possibly by type or destination or both. The VPN goes across a different connection, which in turn has better connectivity to the source of the data you are pulling, thus you are routing round the congestion. The ISP has multiple connections and the direct connection to the data is constrained. Your VPN has found a faster path to the destination data, which could be because: The second and third options are related and have to do with your ISP’s connectivity and restrictions. However, most files transferred are likely to be compressed, so this is not as likely as it would seem at first. If the data you were downloading is uncompressed and your VPN offers compression, then this could explain it. Unfortunately, the number of “hops” is irrelevant. SuperUser contributor davidgo has the answer for us: How can a VPN improve someone’s download speed? The Answer Why is this? Is it because the VPN server reduces the number of “hops” between the server and me? I was recently downloading something at 300 Kb/s, then I decided to turn my VPN on and the download speed suddenly jumped to 1.3 Mb/s. SuperUser reader RazeLegendz wants to know how a VPN can improve his download speed:
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