Craigie

I am running VW 2121 sp5, bought in 2021 but had to keep running 2015 until I updated my 2011 Mac......now using a 16" Mac book pro M1 Max 32gb. VW runs slower and slower ....endless pinwheels and freezes on even simple 2d operations. Slow to open and close files. Pretty much unworkable after spending a packet ....Help !!!

I'm having problems with unfolding Nurbs surfaces. These were created with 2 Nurbs rails and "ruled" between so they are developable but VW tells me not. When I import them into Rhino they develop fine. Any ideas ?