I used https://mozilla.github.io/server-side-tls/ssl-config-generator/ in order to configure the ssl part for my nginx:
https://mozilla.github.io/server-side-tls/ssl-config-generator/?server=nginx-1.11.3&openssl=1.0.2g&hsts=yes&profile=intermediate
but with no OCSP Stapling, ssl_trusted_certificate, resolver.

I have the same results. What puzzles me is the huge gap between http and https performance. Is this http/https performance ration the usual situation or am I doing something really wrong?