This article lists some of the TeamCity server startup properties which can be used to tweak certain aspects of the TeamCity behavior. It is not recommended using any of them, unless you face an issue which you expect to address by changing the properties.
Please note that the support for any of these properties can be abandoned in the future versions of TeamCity without any notice. Thus, if you find a property useful in your environment, we suggest that you let us know about that. Detail your case and used properties/values in your support request.
Web Page Refresh Interval
You can configure different polling intervals (in seconds) for different pages in the TeamCity UI:
How often the server is queried for common events (like build statuses, agents counter and so on).
The delay between an event (received via polling or WebSockets) and the ajax request to update the UI.