I think Creators Toolbox (netherworks) can clean the dson content after you saved the figure in Poser to the library. Then it will no longer use DSON, but only the converted CR2 with associated OBJ file. But make sure you do not delete the obj file which is stored in the DSON Data folder in the Poser Runtime. If i remember correctly, toybox can automatically move the obj file to geometries for you.