About "Properly Size Images" on Pagespeed score

Hello Generatepress team,

I have a question on CoreWebVitals as it's relevant for this season.

I'm trying to understand what I must to do to have this "Properly Size Image" recommendation go away in the test. I'm using the Marketer theme and it seems like only the Featured image is getting caught mostly and is being displayed under "Opportunity" when I run the test. I'm putting the link to the test in the Private tab for your feedback.

I am using the default Wordpress settings and default Marketer theme, at least in the Featured Image area we have no custom code or modifications. Guidance here would greatly help.