[winstonprivacy]

I don't have benchmarks but I built a protocol that QUIC later turned out to be eerily similar to. It was a direct replacement for TCP and we used it to provide an additional layer of encryption for all traffic on a given network between two points.

Latency was exceptionally improved. Web pages felt like the loaded faster and at the very least, users could not tell that they were using an encrypted connection.

The protocol essentially worked using a fast-ACK protocol that would preemptively request retransmits (and was occasionally wrong). This enabled it to use connectionless UDP protocol as the underlying transport mechanism. There is, of course, a cost for reduced latency. That cost was slightly higher bandwidth utilization on the network. This was suboptimal for long-lived streams (media and other downloads) so we tried to fault over to ordinary TCP in these instances.