I have an account with NordVPN, and I can still max out my bandwidth at almost any of their endpoints (assuming the endpoint isn't too congested). How can you improve on the bandwidth bottleneck?
Well, technically, the SPDY technology (now HTTP/2) allow to multiplex connections flow, So SPDY will make faster requests on web browsing concern.
Plus, other VPN technologies (OpenVPN/PPTP/L2TP) got heavier headers, which takes more bandwidth.
How much bandwidth you got? With 150mbps Fiber, we were maxing out the bandwidth with Tunnello (120mbps+), but OpenVPN was struggling between 20-30mbps with more latency on the same server and line.
You can test it by yourself, we’d love to get a feedback if you could try both on the same country.