Hi everyone,
I'm experiencing a very slow Flutter iOS Simulator build after upgrading to macOS 27.0 and Xcode 27.0.
System:
- MacBook Air M2
- macOS 27.0 (26A428)
- Xcode 27.0 (27A266a)
- Flutter 3.47.3 (stable)
- Dart 3.13.3
- iOS 27.0 Simulator
- Simulator: iPhone 17 Pro Max
Flutter Doctor reports:
[✓] Flutter [✓] Android toolchain [✓] Xcode [✓] Connected device [✓] Network resources
• No issues found!
The physical iPhone 17 launches the same Flutter app normally, but launching on the iOS Simulator is extremely slow.
When I run:
bash flutter run -d "iPhone 17 Pro Max"
I get:
Launching lib/main.dart on iPhone 17 Pro Max in debug mode... Running Xcode build... Xcode build done. 769.6s
That's approximately 12 minutes and 50 seconds just for the Xcode build.
The simulator is detected correctly by Flutter, so this doesn't appear to be a device detection issue.
I have also installed Rosetta 2 because Flutter initially reported an architecture error with iproxy.
Has anyone else experienced extremely slow Flutter/Xcode builds on the iOS 27 Simulator after upgrading to macOS 27/Xcode 27?
Is there a known workaround or issue with the new Simulator/Device Hub?
Any help would be appreciated. Thanks!