my app has a View which is rendered many more times than needed when I import a large data set into the app. This causes hangs in my app. I know CellView, below, is the view that is rendered too frequently from using Instruments, and I know that its ObservedObject member Data triggers this, based on the output of Self._printChanges(). I suspect that the attributes of Data that are changing are not necessary to render CellView. How can I determine which attributes of Data are changing, and how can I change CellView to rerender only when relevant attributes of Data change?

struct CellView: View {
    @ObservedObject var data: Data
    var body: some View {
        let _ = Self._printChanges()
        Group {
            renderDataCellView(data: data)
        }
    }
}