[rwbreck]

Good questions-

Antelope Orion Studio 2017 connected via Thunderbolt 3-2 adapter (Apple)
96kHz, 1024 buffer size
Running off of external USB 3 HDD (I think 7200rpm?)

Initially I had disk cache set to normal, ignore errors off, dynamic processing on
I'll change those and try again

No real troubleshooting yet to speak of- just surprised that out of the gate, this computer that I was expecting to be fairly powerful (3.6GHz 8-core i9) is having a lot of trouble playing back more than a couple seconds of this session at a time, even after freezing basically all tracks except reverb returns and mix buss.