Issues with the regular wordpress scheduling functions

Hello,

I’ve been stress testing posting multiple videos at the same time, having them encoded by videopack, and I’ve noticed an issue where if I called:
wp_schedule_single_event( time() + $time_offset, 'kgvid_cron_new_attachment', array($post_id, $force) ); multiple times within the span of 10 seconds then some events wouldn’t be scheduled despite the function returning true.

I don’t know if this could be related to my setup of calling wp-cron.php every minute through a cron job, as opposed to the default of calling it every page visit.
But I’ve replaced the regular wordpress scheduling with the action scheduler library like this:

function replace_wp_schedule_with_async_action_videopack($pre, $event, $wp_error){

	switch($event->hook){

		case 'kgvid_cron_new_attachment': 
			as_schedule_single_action($event->timestamp, 'kgvid_cron_new_attachment', $event->args);
			$pre = false;
			break;
		case 'kgvid_cron_queue_check': 
			as_schedule_single_action($event->timestamp, 'kgvid_cron_queue_check', $event->args);
			$pre = false;
			break;
		case 'kgvid_cron_replace_video_check': 
			as_schedule_single_action($event->timestamp, 'kgvid_cron_replace_video_check', $event->args);
			$pre = false;
			break;
		case 'kgvid_cron_check_post_parent': 
			as_schedule_single_action($event->timestamp, 'kgvid_cron_check_post_parent', $event->args);
			$pre = false;
			break;
		case 'kgvid_cleanup_generated_logfiles': 
			as_schedule_single_action($event->timestamp, 'kgvid_cleanup_generated_logfiles', $event->args);
			$pre = false;
			break;
		case 'kgvid_cleanup_generated_thumbnails': 
			as_schedule_single_action($event->timestamp, 'kgvid_cleanup_generated_thumbnails', $event->args);
			$pre = false;
			break;
	}

	return $pre;
}
add_filter('pre_schedule_event', 'replace_wp_schedule_with_async_action_videopack', 99, 3);

And not my issues are gone!



Thank you.