We are testing an Upgrade from Typo3 8.7 to 9.5.8 . on Microsoft-IIS with PHP Version 7.2.20. Our site has about 11000 pages. Our editors have permissions to see some of the pages, but not all, depending on their be group. They are allowed to edit only some pages (even less that they see). When I log in as an administrator it takes about 4 Seconds to load the pagetree. When I log in as an editor it takes about 2.5 minutes every time I refresh or reload.