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

In my case, neither unpairing device nor deleting DeviceSupport files worked. But after I upgrade to iOS 14.1 and Xcode 12.1, it can work normally.