Disable the schedule Question

In this case, I think the issue comes from the WP-Cron.
To disable WP-Cron, add the following to your wp-config.php file, just before the line that says “That’s all, stop editing! Happy blogging.” Note: This disables it from running on page load, not when you call it directly via wp-cron.php.

define('DISABLE_WP_CRON', true);