Course Restore Stuck but...

Sometimes the course has actually been restored but it seems like the UI is stuck.  Sometimes, it actually has failed.

Environment:

windows 2019, IIS 10, PHP 7.4.29 nts x64, FCGI

Process Timeout, Idle Timeout, Activity Timeout, PHP_Max_execution all set to 3600.

Debugging turned on.  Writing Developer Level errors.

Last php error entry is stuck at check plan security like below.

[24-Feb-2023 13:53:11 America/Los_Angeles] instantiating restore controller 9c956aad2b75b85e46e330d3fcb511e8
[24-Feb-2023 13:53:11 America/Los_Angeles] setting controller status to 100
[24-Feb-2023 13:53:11 America/Los_Angeles] loading backup info
[24-Feb-2023 13:53:11 America/Los_Angeles] loading controller plan
[24-Feb-2023 13:53:11 America/Los_Angeles] setting controller status to 300
[24-Feb-2023 13:53:11 America/Los_Angeles] applying restore defaults
[24-Feb-2023 13:53:11 America/Los_Angeles] Unknown setting: questionbank
[24-Feb-2023 13:53:11 America/Los_Angeles] setting controller status to 400
[24-Feb-2023 13:53:11 America/Los_Angeles] checking plan security
[24-Feb-2023 13:53:11 America/Los_Angeles] setting controller status to 500
[24-Feb-2023 13:53:11 America/Los_Angeles] checking plan security
[24-Feb-2023 13:53:11 America/Los_Angeles] checking plan security
[24-Feb-2023 13:53:11 America/Los_Angeles] checking plan security
[24-Feb-2023 13:53:11 America/Los_Angeles] saving controller to db
[24-Feb-2023 13:53:11 America/Los_Angeles] calculating controller checksum 28d4e8f47de2f394f6cdc20cf928ee7a
[24-Feb-2023 13:53:14 America/Los_Angeles] loading controller from db
[24-Feb-2023 13:53:14 America/Los_Angeles] checking plan security
[24-Feb-2023 13:53:15 America/Los_Angeles] checking plan security
[24-Feb-2023 13:53:15 America/Los_Angeles] checking plan security
[24-Feb-2023 13:53:15 America/Los_Angeles] saving controller to db
[24-Feb-2023 13:53:15 America/Los_Angeles] calculating controller checksum 28d4e8f47de2f394f6cdc20cf928ee7a
[24-Feb-2023 13:53:18 America/Los_Angeles] loading controller from db
[24-Feb-2023 13:53:18 America/Los_Angeles] checking plan security
[24-Feb-2023 13:53:18 America/Los_Angeles] checking plan security
[24-Feb-2023 13:53:18 America/Los_Angeles] checking plan security
[24-Feb-2023 13:53:18 America/Los_Angeles] saving controller to db
[24-Feb-2023 13:53:18 America/Los_Angeles] calculating controller checksum 28d4e8f47de2f394f6cdc20cf928ee7a
[24-Feb-2023 13:53:23 America/Los_Angeles] loading controller from db
[24-Feb-2023 13:53:23 America/Los_Angeles] checking plan security
[24-Feb-2023 13:53:23 America/Los_Angeles] checking plan security
[24-Feb-2023 13:53:23 America/Los_Angeles] setting controller status to 600
[24-Feb-2023 13:53:23 America/Los_Angeles] saving controller to db
[24-Feb-2023 13:53:23 America/Los_Angeles] calculating controller checksum b2256117629e8a8d338927dd4e74d4b4
[24-Feb-2023 13:53:23 America/Los_Angeles] loading controller from db
[24-Feb-2023 13:53:26 America/Los_Angeles] setting controller status to 700
[24-Feb-2023 13:53:26 America/Los_Angeles] saving controller to db
[24-Feb-2023 13:53:26 America/Los_Angeles] calculating controller checksum 2a9fa173c357139aee15180fb705e4f4
[24-Feb-2023 13:53:26 America/Los_Angeles] loading controller from db
[24-Feb-2023 13:53:26 America/Los_Angeles] setting controller status to 800
[24-Feb-2023 13:53:26 America/Los_Angeles] saving controller to db
[24-Feb-2023 13:53:26 America/Los_Angeles] calculating controller checksum c9b68da0603ff207b50c744c7d8f92f5
[24-Feb-2023 13:53:26 America/Los_Angeles] loading controller from db

It just hangs there for the longest time.  Meanwhile, the last few entries of IIS log looks like this

2023-02-24 22:53:19 ::1 POST /moodle/lib/ajax/service.php sesskey=GgHhAcKDQU&info=core_session_time_remaining&nosessionupdate=true 80 - ::1 Mozilla/5.0+(Windows+NT+10.0;+Win64;+x64)+AppleWebKit/537.36+(KHTML,+like+Gecko)+Chrome/110.0.0.0+Safari/537.36+Edg/110.0.1587.50 http://localhost/moodle/backup/restore.php 200 0 0 94
2023-02-24 23:03:19 ::1 POST /moodle/lib/ajax/service.php sesskey=GgHhAcKDQU&info=core_session_time_remaining&nosessionupdate=true 80 - ::1 Mozilla/5.0+(Windows+NT+10.0;+Win64;+x64)+AppleWebKit/537.36+(KHTML,+like+Gecko)+Chrome/110.0.0.0+Safari/537.36+Edg/110.0.1587.50 http://localhost/moodle/backup/restore.php 200 0 0 89
2023-02-24 23:13:20 ::1 POST /moodle/lib/ajax/service.php sesskey=GgHhAcKDQU&info=core_session_time_remaining&nosessionupdate=true 80 - ::1 Mozilla/5.0+(Windows+NT+10.0;+Win64;+x64)+AppleWebKit/537.36+(KHTML,+like+Gecko)+Chrome/110.0.0.0+Safari/537.36+Edg/110.0.1587.50 http://localhost/moodle/backup/restore.php 200 0 0 90

Also hangs there until the site return a ISE 500 that tells me

C:\php\moodle_7.4.29\php-cgi.exe - The FastCGI process exceeded configured request timeout