Well, I guess my scenes aren't as complex as yours, I try to keep them under a billion polygons - LOL! At least the ecosystem seems to be stable for me. When I populate a scene I have no problems. Thanks for the tips on scene construction! Being new to V5i I need to experiment more with various settings. As I mentioned the last time it crashed it asked me if I wanted to use compatibility mode, which I did. It seemed a little more stable...until I went into the Advanced Materials Editor. Some people are reporting crashing in the Plant Editor as well. Frequent saving has helped me from going insane. Hopefully, e-on will address the memory issue in an upcoming patch. I'm worried though, if they didn't in Vue 4 Pro...