I have kind of the same question, so I´ll just add it here...:
So for example: I ahve a shot where I wanna put 10-15 copies of some growFX plant with wind animation on them in a scene.
I´ve tried caching it as Vrayproxy, but I´m getting 8 GB files and bigger.
this will significantly impact rendertimes, since they are copies (to offset the animation), each will have to be loaded separately, as far as I understand.
Multiply that with 10 render nodes and I´m looking at a serious performance loss.
So I´m also wondering why I shouldn´t just use several copies of the original growFX plants in the scene, thinking that buildin the metameshes with after mesh wind effect would probably be much faster than loading the proxies or growFX cache files from disk.
Is this correct or is there some isse I am missing with this approach?