Exactly.
Selecting the skatter grass and pitch the individual component works, I can see it and vray renders it.
Selecting the skatter grass and scatter it on a small patch also works, as long as I stay below few thousands items, < 10k I would say.
Over that Vray freezes during the compiling geometry process.
I’ve tried with other grass proxies and it works without problems and that’s what I’m going to do now but I don’t understand why just the skatter grass stop Vray from working properly