TYPO3 Core

When the DataHandler is allowed to update reference indexing and is asked to do recursive copy operations, it triggers thousands upon thousands of SQL queries even for a limited set (26 pages, ~100 content records, no translations).

It would be wise to add a configuration option to disable this forced reference index updating, and follow that up with a scheduler task to update all reference indexes without slowing down record operations. The option itself can be allowed on 7.6 LTS to be used by site administrators who are able to take the necessary precautions to update the index.