Hi, @SenhorDolas
Thank you for posting in Microsoft Q&A forum.
Yes, there is a deadline in the Hierarchy Settings like below:
If a computer is not running when it's scheduled to receive the upgrade, the upgrade doesn't occur. When the computer turns on and it receives policy, it schedules the upgrade for a random time within the allowed number of days.
If this occurs after the number of days to upgrade has expired, it schedules the upgrade at a random time within 24 hours after the computer was turned on.
Because of this behavior, computers that are routinely shut down may take longer to upgrade than expected if the randomly scheduled upgrade time isn't within the normal working hours.
For more details:
If the answer is the right solution, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Add comment".