Xcode 8 hangs / unresponsive when opening storyboard

Question

I\'ve recently upgraded to Xcode 8 and updated my project to Swift 3. All worked fine for a little while. Storyboard loading has always been slow (even when still running Xcode

Answer 1

I got the same problem using Xcode 9.2, fixed it by removing the stack view which wrapped up other views, I just removed the stackview and its subview tags and kept other views in the scene.