I updated my xcode to 9 today. One of my xcode project with failry big storyboard is not opening. I had no problem opening it till yesterday on previous xcode.
When i click on main.storyboard i can only see the spinning icon.
Activity Monitor shows memory utilization very high. It went upto 10+GB.
I am using Macbook 12inch.
Other small projects are able to open the story board in Interface builder.