Since v15 we are getting a lot of find dialogues, these can come in waves and prevent the users ( 20 + ) doing anything whilst the find dialogue runs. None of the finds in the system are slow, the server is fast, no server scripts are running. Is there an obvious culprit or way to home in on the cause.
This sounds like something I saw in a v10 solution on windows. Eventually figured out that a window behind the visible window was having to do a lot of updates that queried lots of related records. Keeping that window closed when not in use fixed the issue, but your issue might not be the same.