We have been trying to optimize LCP on our pages for quite some time and we have been somewhat successful on our Msite pages.
But we have been struggling to make progress on AMP pages.
One of the issues that we have noticed on AMP is that LCP is fired after all JS is downloaded whereas, on a normal page, it is fired almost immediately after the LCP component(product image) is downloaded.
AMP - bikewale.com : Chro...umbai, India - EC2 - Web Vitals Details
Non AMP - bikewale.com : Chro...umbai, India - EC2 - Web Vitals Details