Reply To: Speed Index / Largest Contentful Paint

[hiegl]

Did you already check your DB-queries with Query Monitor (https://de.wordpress.org/plugins/query-monitor/)? It is really helpful and could point you in the right direction.
My guess is that Smash Balloon Instagram Feed is also responsible for this, but maybe I am wrong.

My go-to SEO-Plugin is The SEO Framework, which is the most lightweight tool, as far as my tests show.