The latency is decreased by shrinking the number of back-and-forths… the TLS handshake is in the first message. HTTPS was built atop HTTP so they had to add an extra back-and-forth.

QUIC has all the TLS built-in, so the number of steps to establish a connection is less — which makes it faster — as the GIF demonstrates. I encourage you to research it more! 🙏

Our relay will be ready soon and will have libp2p QUIC as an option. Libp2p is coded in many languages too.