vrayproxy-particle flow and memory question

[giraffe]

When we use vrayproxies with particle flow, vray proxy looses its memory advantage?
I searched this on the forum and read couple of threads. In some of them it is written that proxies loose their memory advantage because particle flow makes them like a one mesh. In other thread it is said that vray proxy still behaves like proxy and does not loose the memory-handling feature. So I felt confused.
Which is true?

I create a particle system to scatter some vrayproxies. (about 7-10 different geometry)
I use the shape instance operator to scatter child objects (proxies) linked to a parent dummy.
My scene gets too slow even in viewports. I still didnt render anything because havent got result I wanted.

Please explain me about the memory-particle-proxy relation and memory effects on render and viewport.
Thanks

[Morne]

proxy only saves you memory during rendering. Your viewport is a max issue. Supposedly the viewport in 2010 is much better. (that is what they said about the 2009 version when it came out)

[MasterBercon]

.............double..........

[MasterBercon]

AFAIK pflow doesn't support anything but meshes as output. You can't use it to scatter proxies without making maxscript to do it.

[giraffe]

thanks for replies
so I understood clearly about viewport problem.

but when I scatter proxies with particle flow, ( I can and it works), proxies are still memory efficinet during render? or are they loosing their advantage?

strange thing is that when I use them with particle flow, they scatter and render but after shutting down and re-opening file, they dont anymore.
I think first I will scatter a dummy and then replace the dummy with proxies as a different step.