Hello, I have been tracking a client's site speed with Lighthouse running on a Virtual Machine using the CMD tracking the First meaningful paint and Largest contentful paint with some problems:
1. The metric doesn't vary as the site becomes faster. We've been rolling big improvements and with the field tests it does feel a lot faster but Lighthouse is still showing higher load times than the ones we can observe
2. The website's homepage: www.viabcp.com
has been giving errors when trying to run on another virtual machine that we set up and in the manual tests, but the original Virtual machine is still getting metrics correctly
Our client is asking us why is Lighthouse not giving the right metric, and we're worried that since Google is using Web Core Vitals for ranking we're not benefiting enough from the improved user experience because the tool is not reading the site timings properly.