I’ve seen wrinkling like that occur on taller parts with lower infill when the outer shell traps warm/hot air, which distorts the top of the shell as it tries to escape.
If that’s at play here (it doesn’t feel exactly right, though), then as others have suggested, perhaps it’s a cooling fan speed setting?
Any chance your bed is too hot, or some settings like first layer temp/final layer temp are causing unexpected issues? That’s a giant skirt for a large, flat piece. Is the thing tacoing on you?
My other thought on this could be uneven drying of your filament. Perhaps one side is drying to 10%, and the other side is not. Any way to rotate the filament as it’s drying?
How long are you drying for?

I bet he leaves those behind because Dennis Feinstein panned “Fresh Kash,” the cologne he created.
(Before anyone thinks I’m confusing Aziz Ansari’s Tom Haverford character from Parks and Rec with Kash Patel, please be assured that I think Kash Patel is confusing Tom Haverford with himself.)