Same issues here... Development has become unbearably slow since build time increased with this version. Build process seems like freezing on the last steps and it doesn't proceed for a few good minutes before finishing (MacBook seems to be doing little to no computations at that time, looks just like idle). Unit tests take much longer to launch too. Every new build launched takes almost the same amount of time no matter how many lines of code have been changed, you change one line and wait five minutes no matter if there was a build earlier or not. Xcode 12.4, macOS big sur 11.2.1, MBP 2020 16GB i5

@eskimo I followed your steps and I am able to find my workspace path as well. I am working on this issue as well due to security reasons and I have found that disabling bitcode during export process is limiting this issue somehow, but disabling bitcode is not necessarily what I want to do because of dsym, analytics and other advantages of bitcode being enabled. Do you have any solutions to this problem?

I have taken @eskimo advices into consideration and the result of my debugging process is that these strings are 3rd party related, in this case Firebase Crashlytics and Analytics. Removing these dependencies and related code resolved the issue. I have created an issue in the developer repo on GitHub to research this case further: https://github.com/firebase/firebase-ios-sdk/issues/9027