function update_results(){
    // Nonce check.
    $nonce = $_REQUEST['nonce'];
    if ( ! wp_verify_nonce( $nonce, 'ajax_search_filters_nonce' ) ) {
        die( __('Busted.') ); // Nonce check
    }

    $args = array('post_type' => 'perf_task');
    $loop = new WP_Query( $args );

    ob_start();
    if ( ! $loop->have_posts() ) {

    }

    // render results
    while ( $loop->have_posts() ) {

    $loop->the_post();
    var_dump($post);
        //hsta_the_task_perf_card( $post );
}
    wp_reset_postdata();

    $return = ob_get_contents();
    ob_end_clean();

    wp_send_json_success( $return );
}
add_action( 'wp_ajax_update_results', 'update_results' );
add_action( 'wp_ajax_nopriv_update_results', 'update_results' );
?>