The current cronjob settings for Mautic do not aligned with Mautic's recommendations
the tasks "segments:update", "campaigns:update" and "campaigns:trigger" should be staggered. Currently, all of these are fired at the same minute.
Also, the current configuration lets people wonder why the mail sending takes that long - until they find out that campaigns are only triggered once every hour. I recommend to follow Mautic's suggestions to trigger them every 15mins, in the staggered way mentioned above.