Instancing in poser is limited to .obj and textures. Poser does not reload either of these if there is already one cached with the same name. That is why most stores require props to have external geometry, otherwise each copy in a scene would create a new obj in memory.

So if I load 2 V4's in a scene with the same texture, there is only one copy of the obj and the textures in memory. What can not currently be instanced is all of the other information, location, morphs, scale etc. A fully loaded V4 with external geometry still will take up 100's of megabytes of memory for each copy

Bill

People that know everything by definition can not learn anything