I’ve boiled down your code to the important bits so that it’s easier to see why it’s not working and what to change
<?php
// start of main loop
while (have_posts()) {
// main query is being used
the_post();
$args = array(
// your query args here ...
);
$query = new WP_Query($args);
if ($query->have_posts()) {
while ($query->have_posts()) {
// sub qury is being used
// do some stuff
$query->the_post();
$posts = get_field('performers');
if( $posts ) {
// hold the current post in a temp var
// why below
$temp_var = $post;
foreach( $posts as $post) {
setup_postdata($post);
// do stuff
}
// if we do wp_restet_postdata
// it resets to the main query, not the secondary query
// wp_reset_postdata();
// do this instead
$post = $temp_var;
}
}
// do some more stuff
// this resets to the main query
wp_reset_postdata();
}
} // end main loop
?>
