been digging around a bit more, this is with the jan 4th build
I used a white override material
at low forest pro density it rendered fine, using about 12gb ram, same for the other tests, but when I get to a certain density the memory usages goes crazy, over 32gb which is what i have in my system.
should i try a different build? what is the _2013 assert forestpack build all about?
cheers