Just to make sure this thread gets the attention it deserves. I have the same issue on my brand new Macbook Pro 14" M1 Pro with a rather small and simple project. None of the suggestions above made any noticeable improvement, the only thing that works is to hide my SwiftUI previews... Project stats: find . -name '*.swift' | xargs wc -l | awk '{print $1, "***.swift"}' 58 ***.swift 36 ***.swift 40 ***.swift 65 ***.swift 180 ***.swift 70 ***.swift 70 ***.swift 71 ***.swift 147 ***.swift 67 ***.swift 70 ***.swift 35 ***.swift 102 ***.swift 89 ***.swift 194 ***.swift 74 ***.swift 319 ***.swift 115 ***.swift 183 ***.swift 123 ***.swift 84 ***.swift 38 ***.swift 87 ***.swift 22 ***.swift 476 ***.swift 14 ***.swift 30 ***.swift 21 ***.swift 26 ***.swift 27 ***.swift 2933 total My Macbook's stats: At this point I'm considering throwing all my iDevices out of the window as well and start a new career as a barista.