In reply to Lee Jackson.

Find a balance between security and speed has been one of the key issues in 2015 in the webperf space. A few good articles that touch on the topic include this one on measuring SSL performance and RSA keys .... https://certsimple.com/blog/measuring-ssl-rsa-keys ... and this one on making secure connections fast ... https://www.maxcdn.com/blog/ssl-performance-myth (disclaimer: authored by me).