Quote - Oh! Glad you got it figured out- SubD can make for a heavy render load. I've been selective-only using it on the head for instance. Or in one case the Hair object only.

 OK cured the problem and now I understand why it only happens in Poser 2014.  I tried everything and nothing worked, then I remebered I had the figure skinning method set to Poser unimesh.  Changed that back to Poser traditional and all the 'drop-outs' disappeared.

 

The strange thing is that it does not appear to streach the system but seems to 'time out' and you are left with odd grey patches which I assume are where there were buckets of information which were not completed before the time out.

I have also notice that when I rendered the same picture in Luxrender using Reality that there were black lines where on the neck where it joined the chest.  It was clearly the seam that was showing and once again moving the skinning method back from unimesh to traditional cured the problem.  It may be a great new feature on other figures but I don't think I am going to use it much on V4 in its present form.

 

 

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.