Thanks for this new release! Unfortunately, I can confirm the extra startup delay for macOS... I tested on an M1 machine with 64GB of memory running macOS 14.5.
Also, I get the attached popup every time I open the app, even after clicking "allow." Maybe there's something in macOS preferences that will suppress it? After clicking "allow," it takes a full 8sec for the Pd window to appear. I've only timed this casually with my watch at this point, but after trying multiple times I can say that it's consistently around 8sec for me here. Pd-0.54-1 consistently springs to life in about 1sec for me.
I'm happy to run any specific test routines if I can be useful on this.