Set maximum number of records to process at a time for Members List Export CSV

my_pmpro_set_max_user_per_export_loop.php

<?php
/**
 * Set max number of records to process at a time for Members List Export CSV
 * 
 * You can add this recipe to your site by creating a custom plugin
 * or using the Code Snippets plugin available for free in the WordPress repository.
 * Read this companion article for step-by-step directions on either method.
 * https://www.paidmembershipspro.com/create-a-plugin-for-pmpro-customizations/
 */
function my_pmpro_set_max_user_per_export_loop( $max_users_per_loop ) {
	return 6000;
}
add_filter( 'pmpro_set_max_user_per_export_loop', 'my_pmpro_set_max_user_per_export_loop' );