I’m confused because of Xcode 16.0 build time significantly increased

1st build – 23 min (after updating Xcode)
2nd build – 35 min (without any changes)
3rd build – 34 min (without any changes)
4th build – 23 min (clean build) I got very weird result here 😐

This is 5-6 times slower

My mac is M1 pro

Any idea or suggestions? I’ve not migrated swift 6.0 yet, think It will be slower when compiler starts checking of race conditions.