We've added new features to an existing swift/storyboard project using SwiftUI. However, previews don't work for these new views because they timeout. When I click preview for a SwiftUI view, I can see the compiler running, but after about a minute it says "Automatic preview updating paused" and the 'resume' button appears. It appears the project is trying to compile a bunch of stuff before it will display the preview. If I hit 'resume', whether I wait for the compile activity to finish or not, it starts compiling everything all over again and the cycle repeats. What can I do to either enable previews to not time out, or Speed up our build process so previews don't time out? Our builds take about a 1 minute with no source code changes, to over 3 minutes from a 'clean' state.