Same here. Slow launch time in iOS 14.5 Simulator and Big Sur 11.3. But everything is normal when the app runs to real device.

Apple just released macOS Big Sur 11.3.1 today. Let's see if Apple already fixed this problem.

Just updated to macOS Big Sur 11.3.1 and still have the problem. Anyone using macOS Big Sur 11.4 Beta? Today Apple just release the Beta 2 of macOS 11.4

Have you guys tried on macOS Big Sur 11.5 Beta? Lol today Apple released macOS Big Sur 11.5 Beta even though 11.4 Beta still in Beta/Release Candidate

Wanna try to check it out if the problem is already solved, but Apple seems has not release Xcode 12.6 yet. Apple is releasing iOS 14.6 but not releasing Xcode 12.6. Can you run and deploy your app to iOS 14.6 directly from Xcode 12.5?

I am using macOS Big Sur and Xcode 13.1 (Release), and got this issue. UI Test works perfectly but Unit Test is not running any test. It launches simulator and then hang and only showing white screen. I also using Texture in cocoapods. No such error in Xcode 12. So, what is the solution?