https://vovsoft.com/software/auto-change-screensavers/
Vovsoft Auto Change Screensavers is a desktop tool that will change your screensavers.
Forget about setting different screensavers manually and use this compact app that will automatically run screensavers for you in whichever order you prefer.
Selecting a screensaver can sometimes take ages and there are some who spend a considerable amount of time searching and testing different screensavers. Finding the one to your liking can be difficult, but, this is what Auto Change Screensavers excels at, and it will help users find, select and run screensavers with different settings and in a preferred order.
Supports: 
Windows 11, Windows 10, Windows 8/8.1, Windows 7, Windows Vista, Windows XP (32-bit & 64-bit)
Giveaway link –> (License code + Download)
https://vovsoft.com/giveaway/free-auto-change-screensavers-2025/
Lifetime license
No free updates