Quote - Just checking ... are you using the Render in Background option?  Here's what the manual says ...

If your computer has a 64-Bit Operating System, Poser Pro will use its 64-Bit FireFly Render Engine to access as much memory as possible. To utilize the 64-Bit FireFly Render Engine, you must select Render in Background.

nope so I will try this one thanks a whole lot! :), also I use shaderworks advanced render script in PP from RDNA