I have used the Perfect series with V4WM, in fact I haven't used anything but V4WM since it was available.  I purchased each of the Perfect package as they became available and have not had a problem with any of the poses I have used.  As I stated before I have had to adjust the strength of the effect on some poses but I have never yet reverted to removing the Perfect morphs or using the non-weight-mapped V4.

Of course there may be some poses that do not work but I have not found them yet which is close on a year as I purchased the Perfect botty way back in Dec 2011 according to my order summary.

 

 

I use Poser 13 on Windows 11 - For Scene set up I use a Geekcom A5 -  Ryzen 9 5900HX, with 64 gig ram and 3 TB  storage, mini PC with final rendering done on normal sized desktop using an AMD Ryzen Threadipper 1950X CPU, Corsair Hydro H100i CPU cooler, 3XS EVGA GTX 1080i SC with 11g Ram, 4 X 16gig Corsair DDR4 Ram and a Corsair RM 100 PSU .   The desktop is in a remote location with rendering done via Queue Manager which gives me a clearer desktop and quieter computer room.