Solve the “May Slow Down Your iPhone” message on simulator

With Xcode 8.1 and the iOS 10.1 simulator you may encounter the following message:

Don’t worry. This happens because you are running a 32-bit app on a 64-bit architecture (the iPhone/iPad simulator). Change the Supported architecture to x86_64 for the Debug configuration and the iPhoneSimulator platform and the problem goes away.

That’s all!