Okay to tell the truth I am having this problem with Win10 but Win7 does the same thing so here goes.

I have a folder with many other folders inside with pictures in them. So I chose the "Parent" folder so that Windoze would put a big variety of pics up but when Screensaver comes on it keeps rotating the same like 20 pics. I have tried "shuffle" but that just causes Windoze to change the order of the 20 pics that always show. Is there some way to have Windows start the screensaver in a different place every time so I can see different pics? Thanks!