Scalability Pro

Speeds up slow SQL queries and includes various other performance tweaks to help your site scale to any size. Scalability Pro speeds up many slow SQL queries that run through WP_Query, for example, the main query on your archive pages (shop or posts or custom post types). Easy to use – includes one-click custom indexes, automatic front-end query rewrites and options to disable unused wp-admin features to speed up your back-end.