See :issue:`84144`
The main functionality for fetching the whole rootline of a page previously fetched all relational fields defined in TCA of a page record. This led to massive performance problems with large menus, as not all fields are necessary in root line records.
Now, the rootline fetching only looks up relational data of fields which have been added to :php:`$GLOBALS[TYPO3_CONF_VARS][FE][addRootLineFields]`. The field pages.media is added per default since it is a predefined value.
.. index:: Frontend, ext:frontend