Some info on optimizing wordpress https://codex.wordpress.org/WordPress_Optimization https://documentation.cpanel.net/display/ALD/Optimize+Website http://code.tutsplus.com/articles/10-quick-tips-optimizing-speeding-up-your-wordpress-site–wp-23148
Upgrade WordPress to 4.1. The admin backend the connection times out and the server gets really slow:error “The server at domain.com is taking too long to respond.” It looks like this is actually a common issue with this version of wordpress. https://wordpress.org/support/topic/multisite-extremely-slow-after-upgrading-to-41 1) Open database via phpMyAdmin 2) Open table “wp_options” and look for “db_version” … Read more
http://blog.sucuri.net/category/wordpress-security
Path and other info here – https://wordpress.org/support/topic/fix-strict-standards-issues