@The_Elf - just mentioning this for a data point - In December I completed a full year of daily live-streamed shows capturing on average 8 to 15 stereo tracks using Cantabile to record during each show (VSTi’s and VST effects all going to separate tracks, plus it captures all the MIDI from 5 to 7 keyboards plus pads). Cantabile performed flawlessly for every single one! And there was never any CPU issue that I could blame on having the recording running - it is passing digital audio around inside its system at all times anyway! I have recorded over 1600 original live pieces using Cantabile during that time (each performance lasting 1/2 hour to 80 minutes), and it has become my recording software of choice because the setups are FAR FAR FAR easier to bring back up and configure than any of my DAWs permit. (I used a different setup every single performance.)
I use Audacity to split up the .w64 end result into stems and bring them into Samplitude to mix and master in a single swoop.
I cannot speak highly enough of the recording capability included in Cantabile 3. So, there’s my 2-1/2 cents worth! 
Terry