Thanks a lot !
Do you know if I need to activate WordPress Lazyloading with a snippet to add to the functions.php of my custom theme ?
Or WordPress does it natively ?
I found this source that explain there is a function to add but i’m sceptic :
https://seobookpro.com/how-to-enable-the-default-wordpress-lazyload-for-you-images-and-iframes-in-5-steps-no-plugin/
Suggesting to add it to functions.php
// Enable WordPress Default Lazy Load Functions for Images, Videos, Iframes
add_theme_support( 'lazy-load' );