I checked the new bnsupport bundle and I see the Apache log is full of the next error message. Unfortunately, I don’t know if this is related to any of your plugins or theme, can you check? A way of checkin this is to disable all plugins and then start them one by one to detect which one causes the issues.
[Wed Jul 07 08:00:04.106142 2021] [proxy_fcgi:error] [pid 18352:tid 140677308421888] (70007)The timeout specified has expired: [client IP_ADDRESS:51702] AH01075: Error dispatching request to : (polling), referer: https://YOUR_DOMAIN/wp-cron.php?doing_wp_cron=1625644503.3853468894958496093750
Apart from the above, I think you can also ask the WordPress developers for help on how to debug this. Can you open a new question in their official forum?
Did you find anything checking the MySQL events?