If I turn on 'use callbacks' in audio preferences, then turn on DSP, pd's CPU usage goes to > 100% and stays there even if I turn DSP back off. This sometimes locks up the GUI and I have to restart Pd. Without checking 'use callbacks' it seems to be fine. Tried this with default audio devices, MOTU Ultralite mk4, and Blackhole 2ch. Can anyone reproduce?

Pd: 0.52-1-really

macOS: 12.0.1

MacBook Pro 14" M1 Pro

Thanks,

Will