The only cost is not just the .cr2 files. Textures make up a large portion of the memory. To reduce the graphics use, first try to use the same texture on each background figure, poser will only keep one copy in memory. Also since they are for background, use a graphics ap to reduce the resolution. reducing the maps from 4k to 2k uses 1/4 the memory

Bill

People that know everything by definition can not learn anything