I couldn’t inspect the AUDIO settings in the patch because I was missing a lot of plugins, but If I hear crackling on my 2018 MacBook Pro (with 2.4 GHz Quad-Core Intel Core i5), I increase the “Block size” in the AUDIO module, I usually keep it at 1024, but any time I change the output device it reverts to the default 256, and often the crackles show up.
[edit - Oh. Now I see that Lars mentioned it in bullet point #4 of his “Ok, so here goes - Lars’ explanation of Rack performance” post: Modules with ARM builds! - #28 by LarsBjerregaard ]