I've submitted a ticket about this issue. Meanwhile, any help or suggestions for things to try to help me narrow down this problem would be appreciated.

For instance, is your Poser still installed into a Smithmicro folder? Or have you installed it in a different location? Specifically, my Poser is installed into C:Program Files-Smith Micro-Poser 11.

Did a test similar to GWild. Femme base scene that loads with Poser now at 1440x1080. Used the "GPU Medium quality option" that is one of Poser's included options for render settings. I wasn't sure what GWild meant by "default render settings". See images below:

Render settings:

19, nearly 20, minutes to render this scene is ridiculous. Logs:

Result, which isn't a very good quality render. But then I was using "Medium" so I didn't expect a great result. I am including this in case people using the same settings get a far superior rendering result. I've also censored out sensitive areas just to be safe on the forum.