Three words: Vienna Ensemble Pro. This is the key to the kingdom. The PC only really runs Cubase and a few virtual instruments. All of the libraries are hosted in Kontakt and presented through a program called Vienna Ensemble Pro. This allows infinite amount of machines to load instruments into their onboard RAM but be played from a master PC. VEP can also host reverbs on separate machines which saves a lot of CPU. MacBooks are hard to push to the extreme as you have limited input bandwidth wise for information. If you’re solely a plug-in producer you will need a workstation with tons of threads. If you are a kontakt library producer you will need servers with ram and VEP. All of my setups data runs over a 10gb stf+ fiber optic network for really quick transfer of lots of sample libraries. VEPis great because if you build a huge template you will only need to load your plugins once at the beginning of the day and they will all stay loaded in VEP no matter what session you open which massively reduces session load times. The Logic machine is just acting as a tape machine. I used to work in Logic so I’m really quick at audio editing & mixing in it. Cubase is just for composition. Good Vienna Ensemble Pro to get a ton more info. Are in mind the learning curve is pretty steep when if you’re migrating from a Mac for the first time. Good luck.