Can you explain if the System Info Processing Completion Time: 2.68 Seconds that shows up in the top section System Info page is reporting times for the website or just the time to retrieve all the system info that is displayed on that page. I have some sites all on the same server that show like 2.68 seconds and others that show .92 seconds. Just trying to be sure what it is timing.
There are over 100 different checks that occur on the System Info page. So the System Info Processing Completion Time is the total time it takes to complete all of the checks on the System Info page. Time starts when the first check occurs and ends when the last check is completed. If a site has more plugins and themes installed that could increase the check time. DB size could be a factor. Certain plugins or themes may be a factor. Overall PHP memory in use may be a factor. Etc.