Not really. It just gonna use all CPU cores, and won't bloat it with all the installed morphs in every frame. It also will handle lighting much better, so these are for sure perfomance improvements. But complex scenes with everything on max, i mean physics and graphics, still will require a NASA PC. We can't really say anything about that before Beta 2, before the physics system would be implemented. All the performance talk is just pure speculation for now.
Hair system is still undecided. There is possibilty Meshed will stuck with VaM1 system, with some improvments. If he won't find anything better open source.
Clean VaM1 with less than a 100 vars loads blazing fast on modern PCs...
My VAM1 vanilla copy takes like 30sec from clicking on bat file to loaded default scene, by picking it up in a scene browser.
The thing is Unity had been always strugglning with massive data lists. Every modded Illusion game had that, VaM1 had that too.
Though VaM2 will feature an option to boot only with a scene necessary addons and nothing more, like some var managers does now for VaM1.
/edit/
While looking through Meshed messages i found an forgotten gold:
View attachment 5141700
Basically he could have pushed VaM1 to newer unity versions [with tons of work of re-adjusting PhysX] but he didn't want to break scenes. That was 2 years ago.
Noone would ever thought to make some back-ward compatibility version for older scenes or something. You can only download latest VaM with the updater tool he provides... wait a second....