I am running on macOS Big Sur 11.5.1, and Xcode 13.1 (13A1030d). TYPING on Xcode is lagging behind my key strokes. It is very noticeable. Our project file statistics are as follows. github.com/AlDanial/cloc v 1.90 T=10.90 s (633.2 files/s, 119493.9 lines/s) ------------------------------------------------------------------------------- Language files blank comment code ------------------------------------------------------------------------------- Swift 1423 54225 53795 179861 C++ 718 23035 29356 172582 C/C++ Header 2318 45285 119736 168614 Objective-C 795 26029 23481 139493 XML 544 962 259 88535 C 390 15042 23232 84013 JSON 612 1 0 23249 Markdown 56 6005 0 18062 Objective-C++ 33 1013 811 4091 Bourne Shell 7 113 126 677 Pascal 2 87 185 180 HTML 1 5 12 32 YAML 1 0 0 5 ------------------------------------------------------------------------------- SUM: 6900 171802 250993 879394 ------------------------------------------------------------------------------- As you can see, it is a fairly large project. We are using CocoaPods to add dependencies as well (Firebase, Alamofire, GRDB). We are not using SwiftUI. User Interfaces are almost all developed using Storyboards and Nibs. Xcode has had a few minor issues that didn't directly impacted my productivity. But with the latest version of Xcode, typing is extremely laggy. Almost as if the Autocompletion is running on the UI thread. Apple please fix this please. If you can't manage the scale of this project, then at least consider opening up the IDE to be more tinkering-friendly. You've closed up the ecosystem and degrade your existing products which questions your values as an organization.