Editor: Some applications requied long time to work, but if your period to run screensaver is to small ( for example, at my pc this is a 4 minutes ) it will Prevent to you see what is displayed on the screen.
Yes, you may disable screensaver or change period to run it, but more simply is run this application, and while this application is running your screensaver do not started. When this is not requied you simply close this application, thought context menu from tray.