that means your collisions are taking up too much.
Try using optimized collision geom’s, look into [url]Egg Octree] the egg octree script… find the one (about third page) by Treeform.
Draw:Window1:dr_0 means (in my experience only) that objects are being sent to the graphics card.
If you have lots of model’s that have several GeomNodes (peices that where perhaps never joined/merged/flattened in your model) then try calling mymodel.flattenStrong() which will flatten the underlying node structure to a single node.
Hope this helps any bit at all, if my information is any bit accurate…
~powerpup118