Hello,
I have used huge number of FP3 trees in my scene(over 400.000 trees) and I have very unusual problem. When I newly start MAX I can make any selection through "Select from Scene" dialog (standard mapped on key H) but after I rendered my scene and I want to again select through the same function it takes a very long time(for 5 minutes dead MAX), it seems like a lag to me. I didn't noticed this in MAX9 which we used for similar project before with FP3.