Kenneth R.
Cináed
There's a trick around that. For processed midi tracks (VST instruments) you do what you do to arrange and orchestrate it, then "render it" to an audio file, reload that track (but of course keep the original in case you want to make changes.) Now when you run the song, that part is just audio so all it has to do is play it, no processing in real time, saves tons of system resources. Same thing for effects like delay on audio tracks, just turn it off after you get it right, and turn them all back on in the final mixdown. Using this method, I've recorded songs with 20+ track polyphony, multiple VSTs, effects, and channel routing with realtime mixboard control changes, on a PC that's over 6 years old. You don't need to waste 7000 dollars on a mac.