My experience with VCV has been rather different. Apparently, the software isn't multiprocessor-capable, and it runs into critical limitations when it exhausts the capacity of a single core among the 16 that it should have at its disposal here. If it could use the rest of the capacity, it would be an outright monster...but in its current iteration, it's best kept to simple builds, especially if any of the sample-based modules are in use.
I like the idea, I like what it could represent...but that limitation is a serious problem for me.