If your ISP provides only a congested route to say, Netflix or YouTube, then a tunnel through a better connected VPN server can allow you bypass that route enti

If your ISP provides only a congested route to say, Netflix or YouTube, then a tunnel through a better connected VPN server can allow you bypass that route entirely, increasing throughput and lowering latency. In the case where an ISP provides optimal routing, it cannot improve latency. Compression and buffering, among other things, still may offer better throughput.