DataGrid + AdvancedCollectionView

[technelak]

Hi guys!

I have a collection of about 6k items that I am trying to display in a DataGrid bound to an AdvancedCollectionView. I'm trying it this way to utilize filtering and a search function. I'm doing this all MVVM. The problem that I'm running into is the UI freezing when trying to populate the AdvancedCollectionView. I fetch the data on a separate thread and then return to the UI thread to populate the ACV.
I've been trying this in many different flavors and may have coded myself into a misunderstanding of how to correctly bind my DataGrid. I'm still learning ! Can anyone educate me on the correct way to do this? Am I using the wrong collection types for a DataGrid ?

ViewModel:

 // master list
    private IList<T> _source = new List<T>();

    [ObservableProperty]
    private ObservableCollection<T> _collection;   
   
    [ObservableProperty]
    private AdvancedCollectionView _viewSource;

    _source = await Task.Run(() => FetchSomeDataAsync());
    _collection = new ObservableCollection<T>(_source);
    _viewSource= new AdvancedCollectionView(_collection , false);

View:

   ItemsSource="{x:Bind ViewModel.Source, Mode=OneWay}"