When recording live audio performances, some guarantees that the thread that records the signal will always get some attention for the scheduler, would be nice. Otherwise the recording program will miss on the signal, and the recording will have cracks.

We sidestep this problem because our CPUs are insanely fast for this task, so as long as you don't game, compile and record audio at the same time, you should be fine. But we don't have any guarantees.