Once P8 or P9 approaches that 32bit memory allocation, it will slow to a crawl - and start putting much mileage on the hard drive by page filing.

     By comparison, on a 64bit system, I intentionally burdened Poser Pro 2012 with a massive scene, complex materials, and lots of special effects (reflection, refraction, anisotropic sparkles, SSS, IDL, displacement, GC) and rendered it at 5120x1600 pixels, with 95% irradiance cache and 95% IDL quality with ten ray trace bounces.  I got Poser to draw a bit over 48GB (max occurred near end of the IDL precalc);  Firefly continued to run at full speed.  ^^

Poser 12, Poser 13, Poser 14, in feet.  

OSes:  Win7Prox64, Win7Ultx64, Win11

Silo Pro 2.5.6 64bit, Silo 2025.1, Vue Infinite 2014.7, Genetica 4.0 Studio, UV Mapper Pro, UV Layout Pro, PhotoImpact X3, GIF Animator 5