Reply to SwiftData app always at 100% cpu when idle after upgrading to Xcode 15.3 I have the same issue on UIKit app with UITableView and UICollection with diffable datasource. On Xcode 15.2 everything is ok, but on Xcode 15.3 when the scrollviews are moving some random thread starts have 100% CPU for a while. Developer Tools & Services Xcode Mar ’24