Disqus is one of the most popular comment management systems around. It is not perfect, but many top websites continue using it. If your site gets a lot of comments, its performance could suffer though. Disqus Conditional Load for WordPress is a handy plugin that lets you load Disqus on demand.
This plugin loads Disqus comments on scroll or click. You can use a shortcode to load comments anywhere. Want to change the width of your comments section? No problem. Webmasters have the option to add a custom button class in the backend to apply their own styles. Count Script can also be disabled to improve speed.
Don’t forget that you will need to disable the official Disqus comment before using this plugin. The pro version offers even more features, including WooCommerce support, Popular Comments Widget, and various button styles.