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Based on the current configuration: No OCSP stapling and no elliptic curve key exchange.

Also your setup suffers from TLS version intolerance, which by itself isn't a performance issue, but it is a hint that you're using a badly written TLS stack.

https://www.ssllabs.com/ssltest/analyze.html?d=junglee.com&s...

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And how much do those increase first byte latency? (which is the real problem)

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-...

And some other advice and links here: https://istlsfastyet.com/

Pretty much all of them matter for first byte latency. OCSP & the key exchange both happen before any data can be exchanged.

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