ardour 5.5 alsa vs jack backend

Is there a downside to using ALSA as the Audio System? I’ve compared ALSA to JACK2 as the Audio System and they both seem to perform well (at 64 samples). Primarily I’d like to know if there are sound quality differences and any ardour DSP optimization differences.

The only downside is that you cannot connect to other applications if you use the ALSA backend. The upside of the ALSA backend is that MIDI devices “just work” with no further effort on your part.

There is absolutely no quality difference and no change in Ardour’s DSP in either case.