Slow app launch time after updating to iOS 14 and Xcode 12

Question

I noticed that the launch time of my app has increased significantly (it takes a full minute now vs seconds before) since updating my device to iOS 14 and using Xcode 12. I

Answer 1

I have the same problem, but solved this by doing the following things:

For simulators run iOS14, delete folders inside ~/Library/Developer/Xcode/iOS DeviceSupport/ (folder's name started with 14.0).

For devices run iOS14, select Xcode window tab, click Devices and Simulators, find your device, right-click to unpair the device

After doing the work, re-run your app, everything should be ok.

References:

• https://developer.apple.com/forums/thread/123068?answerId=420683022#420683022
• https://stackoverflow.com/a/29931912