if I would render this I would:

Render Proces:
Number of treats = equal to number of CPU cores and Vink Separate process.
In your current setting, U are only using one core of your CPU.

Cast shadows ON
Raytracing ON
Raytray bounces at least 2-3
Irradance catching is the one to play with, I would start at 0 and work my way up.
Pixel samples : start at 3 and work up to 5, then 7
Min shading rate is causing part of the blur: put at .2 (point 2) For very sharp goto .1 but render time will increase.
Bucket size with your RAM at 32
Min Displacement bounds can stay at 0

On the right side
I would Vink Smooth Polygons ON
Vink use Displacement maps ON (If you use any?)
Post filter size 1 (one)
Post filter type sinc
Save and render.

have a nice day.

PS, you did install SR3, right?

 

Poser 1, 2, 3, 4, 5, 7, P8 and PPro2010, P9 and PP2012, P10 and PP2014 Game Dev
"Do not drive faster then your angel can fly"!