I cut a lot of Corian (in fact, it’s about all I do cut). I run basically the same settings I use for wood, but my feed rates are conservative anyway. Corian cuts VERY good, nice and crisp details. Use a stiff bristle brush to clean up after the cuts. If I’m doing actual carving, many times I will run that part of the program twice to clean it up good.
It is also very good for painting engraved details. I spray-paint the carved detail, then wipe over it with a paper towel with a bit of solvent (I use charcoal lighter fluid). Use a block of wood or some other nice flat surface behind the paper towel so you’re not wiping down into the carved areas.