Google rolled out "Core Web Vitals", indeed the speed factor is today crucial for the ranking of a website.
The Google PageSpeed score assigned to your pages is now really important, a score of 90 or above is considered fast, and 50 to 90 is considered moderate. Below 50 is considered to be slow.
The JSpeed plugin for Joomla increases performance of your website
by applying automatically several improvements as suggested by Google PageSpeed best practices. By installing the plugin you can reach up to a doubled score during the Google PageSpeed test. JSpeed is the most powerful Joomla performance plugin that implements unique technologies such as Adaptive Contents™ that makes it possible to remove certain parts of HTML or CSS/JS files only for bots and page speed tools to dramatically raise up the page speed score without losing website functionality for regular visitors.
MORE INFO