I had some issues, but I think that's more related to SP3 of max design 15. And then I got curious, because if there showed to be any huge signicifant differences, I'd go for one of the other coloring options with better performance.
When you're first here, do you have any clue why reflections are turned off on default on the grass library presets?
I almost always turn them on, but when I forget, I have huge problems with the realism in the post process.