Go to Settings > Wallpaper > Add New Wallpaper . Select Photo Shuffle , choose your curated wallpaper album, and set the frequency to On Wake or Hourly .

The solution isn't downloading one image at a time. The solution is bulk acquisition. The solution is the

4K Ultra HD (3840 x 2160): Essential for larger monitors and high-end laptops.

Zip files compress data, allowing you to download hundreds of HD and 4K images much faster than downloading them individually.