We have recently built our company a new website. The website was built from the ground up to be fast. We have minify, compressed images, CDN, Caching. Yet despite this our google speed test fails saying it can't even determine a speed and both desktop and mobile come up poor.
However if we run the test at pingdom we have a load time of 2.41 seconds and score a B rating. We've had it down to milliseconds but then had display issues in Edge so we had to reverse the settings.
I don't understand the drastic differences and why Google is not seeing everything we have done to make the site fast. Why is this??