You can try limiting the total of real and virtual (paged, swap, whatever you want to call it) to something less than 2GB total. E.g. 1GB real and 960MB virtual. It won't stop P6 wasting memory (even by P5 standards), but it might stop P6 failing quite so badly when it does deep six it's memory allocation. No version of Poser to date appears to be able to contain itself to the 2MB address limit imposed by Windows on all applications. Go over 2Gb in any version and the results vary, but they are all ultimately terminal. When it goes over 2Mb it'll be writing on memory allocated for other uses - presumably the 2Gb Windows reserves for each executing applciation for its own OS use - and things will go badly wrong. As to why P6 uses memory so badly relative to P5 - which itself was pretty bad versus P4/PP - check one of my recent posts (search on layingback) which links back to a post by WierdJuice than explained what he discovered.