Screensavers should not be something that is difficult to figure out how to configure especially since it was so easy in the “old days”. But of course Microsoft likes to change things around on us to keep us on our toes! With newer builds of Windows 10 such as the Creators Update or later Microsoft made even more changes to try and confuse us and you usually don’t know what they are until you need to do something and it’s not the way it used to be. The screensaver slideshow was very easy to setup and worked very well.
Keep in mind that this is different from the desktop background slideshow where your desktop picture would change at certain intervals. Windows has had built in screensavers since the beginning of Windows and if you have ever played around with them you might have noticed that you can configure a slideshow screensaver that uses pictures off of your computer.
