[PD] GEM - multimodel performance issue

[Pierre]

Hi,
I get very poor performance with [multimodel]
Models are loading fine (with few warnings message about 'material not 
found')
but if I want to change the model number on the right inlet of 
[multimodel] cpu use increase to 100% and I have frames drops on the gemwin

Any ideas about what it could be ?
Do I need to fill a bug report ?

with : pd vanilla compiled from svn on ubuntu 10.10 64bits, gem compiled 
from svn too

ps : I have many gem patches, with models, shaders, particules, repeated 
gemlist, etc on a brand new laptop (with nividia 480) and all my patches 
are working great (i mean a loooot of fps) except this one with multimodel.

pierre