Low cpu usage with ForestLite / Multiscatter

[Mnietek2707]

I have problem with low cpu usage. During rendering attached scene CPU usage is below 50%.
There is simple grass field. I'm trying with ForestLite and Multiscatter. In both cases CPU usage is similar.
Machine: 2 x Xeon E5520, 12 GB RAM, Vista 64bit, Max 2011 64bit.
The file contains ForestLite object and deactivated Multiscatter object.
Where there may be a problem?


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sorry for my English

[Itoosoft]

It works fine for me, at least with Forest Lite (i have not Multiscatter).
I'm using Max 2011 64 bit, Forest Lite 3.3.1, VRay 1.50 SP5 running in a CPU Q9650, 8 Gb.RAM, Windows 7 64 bit.

[rivoli]

that may happen when vray either runs out, or can't access all available memory. have you raised the dynamic memory limit? default is 400mb, which never happen to be enough.