I had the same issue on my M1 macbook pro. What I tried: Re-install MacOS, Xcode 15 beta, iOS 17 beta, but all failed. One day, I connected my old iPhone 7 (iOS 15) and built my applicatoin on this phone. After that, debugger works very fast on my new iPhone 15 pro max! I'm not sure this solved the problem, but it works very well now.

Same here... I've turned of macbook's wifi/bluetooth and iPhone's wifi/bluetooth but this did not solved the problem.