I'm preparing (at long last) to update from Ubuntu 20 LTS to 22 LTS. Thanks to you for having a guide specifically for that now! I really appreciate it. Once upgraded, I know the default system PHP version will be 8.1, and that ISPConfig will happily use that. The current recommendation for Nextcloud is PHP 8.2, though. Of course, I can configure that site to use that PHP version. Is there any good reason not to do that, though? Is there, for example, a performance penalty in having the system/ISPConfig PHP version being 8.1, and Nextcloud using 8.2?
