Tough to say without knowing more about the stack. But in terms of first byte latency, some things you can look at: * TLS False Start * HTTP/2 + ALPN * Optim

Tough to say without knowing more about the stack. But in terms of first byte latency, some things you can look at: * TLS False Start * HTTP/2 + ALPN * Optimizing TLS record size Some 2013-era advice for nginx here: https://www.igvita.com/2013/12/16/optimizing-nginx-tls-time-to-first-byte/ https://www.igvita.com/2013/12/16/optimizing-nginx-tls-time-... And some other advice and links here: https://istlsfastyet.com/ https://istlsfastyet.com/