Hey I had run into some issues with my pcg stuff as well. I’m not sure if my fix will help you, so I was wondering if you already found a solution.
My issue was that my splines were not updating when I moved them (among some other weird behavior) and the solution was to move the pcg volume so that the spline would touch it.
I don’t know if my solution is relevant but I wanted to mention something just in case it helps!