Is there a way to stop the program from continuously regenerating and deleting wallpapers?

I have a dual screen setup with a static wallpaper on one monitor and a slideshow of 6 images on the second monitor.

The images are the exact pixel dimensions for the respective monitors (3440x1440 and 2560x1440) and so no scaling/repositioning is needed.

It seems doing it this way is more resource intensive than it need be whilst also putting more writes on the drive.

Also on the second taskbar, all of the icons are smaller than on the Windows taskbar, as well as the Windows 10 start icon looking different. Is there a way to make the second monitor taskbar exactly match the original taskbar? I am using StartIsBack

Any help would be greatly appreciated.
Thanks.