DSON is definitely SLOWER - dial spinning stutters and i find myself often manually tweaking the digits, or ticking the up/down on each side of the dial. I've only been working at this since Poser 7, but I remember when most renders took 20 to 30 minutes on an old AMD X - now I have an AMD octo-core with 16GB and Win8.1 with PPro2014 maximizes all cores & the full RAM. test renders (without IDL or SSS) take seconds.

For fun, below is a quick DSON in PP2014 image with 3 G2F Callie - and the CPU fan (normally off) ran a steady hum as long as the scene was open.

I might just delete my DS and 'My DAZ' library and start over, as I have discovered that any & all People you install consume about 1/4 MB of space in the Pz3. So for example, I installed Ninive 6, but didn't really like her form ... but now forever, every Poser scene I creates includes a 1/4 MB of valueParam, tagetGeom, and deltaAddDelta for her - add in V6, A6, Belle 6, Girl 6 and that means several MB of flotsam in each & every PZ3 file (DAZ might want to reconsider that design). If I start over, I can stop installing stuff I have but don't plan to use.

I wrapped a little story around it: http://www.renderosity.com/mod/gallery/index.php?image_id=2625142