I've back-merged the portaudio update to version 0.53 (tried a week ago but messed it up, hopefully have it correct now). If I understand correctly this will fix the hang-on-macos-13 trouble but won't prevent people from checking callback which also can hang Pd on a Mac.
Meanwhile there's Christof's semaphor feature which promises to lower latency (I tried doing this earlier in s_audio_pa.c but found it actually increased latency; not sure what's going on here). The PR is here: https://github.com/pure-data/pure-data/pull/1756
I'm now thinking I should get multichannel inlet~/outlet~ finished first, then study and hopefully incorporate the semaphore PR after that's all working. Then that can be 0.54 (so that 0.53 can be limited to bug-fixing).
I wanna get the 0.53 bugfix out as soon as it's pretty sure that it actually fixes things...
cheers Miller