Hi digorange,
Set your preferred images in same slideshow TYPE meta. The order number must be set for all images. For example, i have a set of slideshow called “header_slideshow” with 4 images on the slideshow.
1. Add the slide type called “header_slideshow”
2. Add slides, set the corresponding image as featured image, set the slide type “header_slideshow”
3. Set the order number for each slide. (1 to 4)
Hopefully can help!