Lockscreen Slideshow not working

[Terminator_]

Hi. I've been trying to try out some of the customization options on Windows 10, but 1 option doesn't seem to work, the slideshow option for the lock screen (works for wallpaper). It doesn't show any of the pictures in the folder I selected to begin with and instead just shows the previous image I selected.
I'm also wondering if there is a way to have the image change between 1 and 10 minutes (want it at 5 minutes)
Thanks

 

[Terminator_]

Solution found : Setting Windows Search Service to Automatic did the job