Hi,
Not sure if this will work for you, but it worked for me..
//Remove WPAUTOP from ACF TinyMCE Editor
function acf_wysiwyg_remove_wpautop() {
remove_filter('acf_the_content', 'wpautop' );
}
add_action('acf/init', 'acf_wysiwyg_remove_wpautop');
This will remove it from all ACF WYSIWYG fields, but you should be able to target this to just one field..
The difference between this function and the others I saw in this thread, is that the action is added on ‘acf/init’
