JcrObservation mechanism has configurable delays since MGNLUI-8438. Also maxDelay property was deprecated since MAGNOLIA-9176, setting it has no effect currently. The default values for observation delays weren't tackled during this effort. See JcrObservationDefinition delay and maxDelay value.

We can invest more time to investigate if there are better value for default delay and change it to achieve better performance without lack of UX.

Also as part of this ticket we can investigate what value is reasonable to use when performance issues happen or more generally provide some procedure to derive this number for particular instances/number of items in workspace/number of sites/etc.. and document it for customers suffering from different performance issues.

Dev context: https://git.magnolia-cms.com/projects/PLATFORM/repos/ui/pull-requests/2532/overview?commentId=124060
Usages of WorkspaceEventListenerRegistration in codebase: https://git.magnolia-cms.com/plugins/servlet/search?q=withDelay