How to stop desktop wallpaper changing?
It only changes constantly in Live mode, if you install it to hard disk it should stop. (It might also stop if you use persistence but I'm not sure about that.)
I'm not sure if there's a way to stop it in Live mode.
In live mode there's a script that does that.
In the terminal apparently there's a command with a boolean to turn it off:
Else just kill it with "killall enlightenment-wallpaper-switcher".