Wordpress

ACL : https://wordpress.org/support/article/roles-and-capabilities/

[Try to remove jQuery when possible — everywhere]

https://youmightnotneedjquery.com/

[WP Rocket - Delay/Defer per plugin]

Smart post show pro (lazyload image) :

[Allow WP search to include certain metaquery (acf) fields]

functions.php

function search_by_meta_join( $join ) {
    global $wpdb;

		$meta_key = 'acf_field';

    if ( is_search() ) {
        $join .= " LEFT JOIN {$wpdb->postmeta} pm ON {$wpdb->posts}.ID = pm.post_id AND (pm.meta_key LIKE '%" . $acf_field . "%') ";
    }

    return $join;
}
add_filter('posts_join', 'search_by_meta_join' );

function search_by_meta_where( $where ) {
    global $wpdb;

    if ( is_search() ) {
        $where = preg_replace(
            "/\(\s*{$wpdb->posts}.post_title\s+LIKE\s*(\'[^\']+\')\s*\)/",
            "({$wpdb->posts}.post_title LIKE $1) OR (pm.meta_value LIKE $1) ", $where );
    }

    return $where;
}
add_filter( 'posts_where', 'search_by_meta_where' );