Mobile LCP & TBT still high despite image optimization

Hey @arjunkhankriyal,

Great question, and thanks for all the details!!

Something worth exploring while we wait for some peer support:

For HubSpot CMS specifically, it’s worth auditing what main.js and any HubSpot-injected scripts (forms loader, analytics) are contributing to your main thread. These can be harder to control than your own JS.

A few resources that may help in the meantime:

Hopefully some of our top contributors here can speak more directly to the issues running into. Tagging a few folks who may have some additional insight here:

Hey @MichaelMa, @CarolinaDeMares, @Alex_Boissonneault – do you have any suggestions for @arjunkhankriyal on this?

Thanks in advance!

Sam, Community Manager