Windows 11 desktop background slideshow interval

Windows 11’s default background slideshow (Settings → Personalization → Background → Slideshow) exposes only six rotation frequencies:

The legacy background chooser, still accessible via:

shell:::{ED834ED6-4B5A-4bfe-8F11-A626DCB6A921} -Microsoft.Personalization\pageWallpaper

offers additional options:

Even finer control may be possible in HKEY_CURRENT_USER\Control Panel\Personalization\Desktop Slideshow, though intervals <20s are reportedly unreliable.

❧ 2025-08-16