Hello, I installed the MarkupSocialShareButtons  by @Soma. That made the site very slow. So I uninstalled it and removed the files. My site speed was for all pages under half a second. Now it takes up to 10 seconds to get a page or I get an ERR_CONNECTION_RESET . Also occasianlly pages don't render completely (missing images, or admin pages that look different). I cleared all the caches (all in one minify). Saved most of the templates again (some have caching on).