Speed testing for SEO

For years I have been using https://tools.pingdom.com/ to get a quick estimate of page load times. The figures seem to match my subjective experience.

I've recently been trying Google PageSpeed Insights (https://pagespeed.web.dev/). The results it gives are radically different from Pingdom. There are reporting MUCH longer load times, and the times they report far exceed my informal stopwatch tests.

My initial reaction is that the Google tool is flat out garbage -...

Speed testing for SEO WordPress ...