Procedural textures eat up processor time. Nothing prevents you from lowering the resolution of your texture maps in an editing program it's a pretty straightforward procedure. I for one would rather have the 4000x4000 texture to start with. so that If I want a close up render for print purposes I don't have the ugly pixellation. On the other hand bumping up the resolution of a low res texture will never give you good results. 3D rendering is a time/processor intensive process. What does eat up memory is when you try on three or four different mat poses before deciding which one you like best, because Poser keeps all the maps loaded during the session. When you do that, save the file, chut down Poser and restart it to clear those maps no longer needed. If you have multi-figure scenes render them in sections. Background characters can be rendered separately and then those renders can be mapped on to a plane in the scene to cut down on resources, there are lots of workarounds.

Dominique Digital Cats Media