I've found it responds quicker if you set the rendering as a separate process. Granted, task switching probably isn't too good of an idea when rendering, since you're using the computer to do things that could otherwise have been used for rendering... but yeah.. When not set as a separate process, Poser will not be visually changed as the foreground program until it renders its next "square", whereas if set as a separate process, it does so almost immediately.

 

Currently using Poser Pro 2012 (Display Units = feet)

AMD Phenom II 3.2ghz (6 cores)

8gb RAM

Windows 10 Pro 64bit