Navigation ViewModel Load DataGrid take about 1s,How to Improve it?

[321Oscar]

Hi SingletonSean,
I used the Navigation source code in the tutorial and found that when navigating to a View with a datagrid, loading is very time-consuming. The data bound to the datagrid is only 40 rows. I would like to ask how to optimize it.
it is the load log

16:07:56 486 view changed
16:07:56,486 navigation Analog: 4 ms
16:07:56 574 analog view
16:07:57 273 datagrid loaded take 698 ms

it is AnalogView and layoutNavigation Code:

public partial class AnalogView : UserControl
    {
        Stopwatch watch;

        public AnalogView()
        {
            InitializeComponent();
            Console.WriteLine($"{DateTime.Now:HH:mm:ss fff} analog view");
            watch = new Stopwatch();
            watch.Restart();
            this.Loaded += AnalogView_Loaded;
        }
        ~AnalogView()
        {

        }
        private void AnalogView_Loaded(object sender, RoutedEventArgs e)
        {

            //watch.Stop();
            //Console.WriteLine($"{watch.ElapsedMilliseconds}");
            this.Loaded-= AnalogView_Loaded;
        }

        private void datagrid_Loaded(object sender, RoutedEventArgs e)
        {
            watch.Stop();
            Console.WriteLine($"{DateTime.Now:HH:mm:ss fff} datagrid loaded take {watch.ElapsedMilliseconds} ms");

            this.datagrid.Loaded -= datagrid_Loaded;
        }
    }
 public class LayoutNavigationService<TViewModel> : INavigationService
        where TViewModel : ObservableRecipient
    {
        private readonly NavigationStore _navigationStore;
        private readonly Func<TViewModel> _createViewModel;
        private readonly Func<NavigationBarViewModel> _createNavigationBarViewModel;
        private System.Diagnostics.Stopwatch stopwatch;
        public LayoutNavigationService(NavigationStore navigationStore, Func<TViewModel> createViewModel, Func<NavigationBarViewModel> createNavigationBarViewModel, 
            string navigationName)
        {
            NavigationName = navigationName;
            Console.WriteLine($"{DateTime.Now:HH:mm:ss,fff} ctor navigation {NavigationName}");
            stopwatch = new System.Diagnostics.Stopwatch();
            //stopwatch.Restart();
            _navigationStore = navigationStore;
            _createViewModel = createViewModel;
            _createNavigationBarViewModel = createNavigationBarViewModel;
        }
        ~LayoutNavigationService()
        {
            Console.WriteLine($"{DateTime.Now:HH:mm:ss,fff} dispose navigation {NavigationName}");
        }
        public string NavigationName { get; set; }
        public void Navigate()
        {
            //stopwatch.Stop();
            //string time1 = stopwatch.ElapsedMilliseconds.ToString();
            stopwatch.Restart();
            _navigationStore.CurrentViewModel = new LayoutViewModel(_createNavigationBarViewModel(), _createViewModel());
            stopwatch.Stop();
            string time2 = stopwatch.ElapsedMilliseconds.ToString();

            Console.WriteLine($"{DateTime.Now:HH:mm:ss,fff} navigation {NavigationName}: {time2} ms");
        }
    }

Looking forward to your reply，Thank you

[321Oscar]

here is the source code: WpfDataGrid