Highly dynamic sites are great for conversions and search engines. Each time you visit a dynamic site things change: images, testimonials, videos and the like. Dynamic sites can have performance issues however. Using a WordPress caching plugin can help speed up initial and repeat page loading speeds. This article shows the effect of W3 Total Cache plugin on response time metrics.
With Google and other search engines factoring speed into desktop and mobile search rankings, speed is essential in website design. Google reports on speed metrics in Google Analytics and probably uses some combination of its Speed Index and Pagespeed Insights score. This article shows how we used mod_pagespeed, a speed plug-in, and some manual optimization to improve the Pagespeed score of a complex website.