I started playing with Vision FX. Uses some memory, but gave nice results. One minor thing is, when you choose one out of five, that's the only one you can Save. It is save and close.
See screendump.
Because you have to close the plugin, I tried it again with same image and prompt, but got other results than the first try. Typical AI programming !!!
An dthere is no manual available, but we have the corel forum and there you can find a some explanations about the use of the sliders.