When adding and removing users in the Administration of Groups and Users, a request may timeout or the page may be unresponsive for users of 100+ user accounts.
Issue #10501 was marked as a duplicate of this issue.
Group management for large teams has been reworked to be more responsive. Individual accounts with many contributing users will not get the same performance benefit as they are not designed for large numbers of contributors.
Removing component: Usability (automated comment)