Possible Memory Issues

[Sebastian Ek]

renderers.current=vray()
vr=renderers.current
vr.system_raycaster_memLimit = -2048

[pierhe67]

I have tried this script in Vray 3.6 and it doesn't work.
I think I have the same problem described before, most of the time, as project become bigger, my slave machines stop rendering.
I have 64 gb RAM in my main computer, another one 32 gb, and 4 more at 24 gb.
And it is the order they stop rendering, first the 4 weakest, than the 32gb and at the end only my main computer is rendering.
I red that the subject is pretty ancient, Is there any solution fixed since then?
Can't we put directly a negative amount of RAM to save what the system needs to work?