Use a more reasonable buffer size, I was getting very steppy automation sound and wasted a bunch of time thinking it was a race condition in the new audio engine that's about to hit the repo...
My new ultra-hardcore mega-epic multithreaded audio engine, featuring
a blend of locking and lockless synchronization techniques...

There's still some more work todo, but this essentially is pretty
f'ing efficient now, although I need to create indexes of the
workload with which I could probably cut idle CPU usage by half or so.
The busses now scheduled in the worker threass using a lockless wait,
and everything mixes itself, rather than being done by the main thread.