Remove W3TC and replace it with WP Super Cache. Verify that the .htaccess rules are installed correctly through their test and ensure that the W3TC rules are re

Remove W3TC and replace it with WP Super Cache. Verify that the .htaccess rules are installed correctly through their test and ensure that the W3TC rules are removed completely. Most caching ignores surfers with cookies (i.e. logged in users) which then points to the plugins you might be using when logged-in surfers visit your site. Category with counts, Tag Cloud, the Post Calendar are the three most expensive queries in wordpress. WP-Statpress is also a huge performance problem - you can just put indexes on the tables to get reasonable performance out of it. Some of the related posts plugins are problematic as well. Profile the site, figure out which plugins contribute to the problems, see if there are better/acceptable replacements.