Faster rendering is:
1: smaller image size
2: faster hard drive
3: more ram - with 2Gb free for ArchiCAD beyond system requirements
3: reduce rendering method to "better"
4: use no refraction in glass !!!!!!!!!!!!!!!!!!!
5: 4-6 suns in sun object
6: sky object lat 3 long 6 soft shadoz
7: give up on sunandskyobject -- return to simple built-in sun with high ambient
Dwight Atkinson