Changes (as compared to 5.56) include:
* The rendering of Monitors page was slow with large number of servers both registered and selected and when multiple users were connected simultaneously displaying the Monitors page. It could take 1 minute or more. It now renders in few seconds.
* With a large number of servers registered, editing details for one was slow. Also this could take around 1 minute, and the improvement is in the same range as above.