Master/Slave setup: where to put best CPU?

[Grape_Brotherhood]

As in the title....given that I mainly work with:

- Lots of VSTs and Kontakt instances
-Lots of Orchestral Work
-Not so much audio recording
-A few plugins in the inserts, but the most of them would be used only in mixing/mastering phase, when I have already bounced all the VSTs tracks to audio to do some mixing...
- I want to work in master/slave mode with Vienna Ensemble Pro.

/// The Question is: ///

Is it better to have the most powerful CPU on the master computer (where I run Cubase) or on the slave, where I run loads of VSTs ? Imagine an i7 or i9 cpu....would it be more efficiently used and useful on master, or slave?

Again, this is in the scenario of working mainly with lots of VSTs for large orchestral midi mockups, and a few plugins used sometimes in the inserts or on the master bus, just to smooth/balance temporarily the overall sound while composing.

Also, my current only computer is a Mac Pro:
Mac Pro Mid 2012 - 3,33 GHz 6-Core Intel Xeon - 20 Gb RAM.
Cubase 9.5

And I'm wondering if I should upgrade the Mac Pro to use it as a master or a slave?

Ideally, I'd like to keep working on my Mac as master for now....because I have a lots of stuf installed on it already, and would like to simply enhance the workflow to be able to work with a slave and load big orchestral templates.

Also....would the 3,33 GHz 6-Core Intel Xeon be capable to handle all the audio plugins/inserts work, if all the VSTs libraries are on a new slave pc?

Thanks in advance!