We are using Radgridview in our wpf application which is autogenerated using Class Models. When the number of columns are quite huge(more than 35-40 columns), the performance of the horizontal scrollbar is quite poor and even worst when the data on the Grid is huge. Infact the experience it gives while scrolling seems as if the scrollbar is continuously growing. I have tried the following settings on the RadGridView in the xaml but there is no significant improvement in the performance:

EnableColumnVirtualization="True" EnableRowVirtualization="True" VirtualizingPanel.IsVirtualizing="True" VirtualizingPanel.VirtualizationMode="Recycling" ScrollViewer.CanContentScroll="False" ScrollMode="Deferred"

RadGridView is consuming resources when its IsBusy property is set to False in Windows8, Windows8Touch, Office2013 themes. 

Available in LIB version 2017.1.206 , it will be also available in the R1 2017 SP1 Release.

Resolved with lib version 2014.2.0825.

When RadGridView is grouped by a column with ShowColumnWhenGrouped property set to False and GroupDescriptors are cleared, the column does not get visible. 

Cell gets out of the edit mode when new items are added in the collection. The same scenario works correctly if alternation is applied by RowStyleSelector. 

Rows get duplicated when SortDescriptors are applied and items are added to SelectedItems collection by a behaviour.

GridViewDataColumn.IsVisible binding is broken in a custom scenario. The problem is reproducible only in child GridView.

Resolved with lib version 2014.2.721.

You can not select different filtering options through keyboard navigation. The only possible way to select a filtering operator from the list with available filtering operators is to click on it.

The problem should be resolved with lib version 2016.1.125.

The NullReferenceException is observed when the GridView is Grouped and rebound in the CellEditedEnded event handler.

GroupFooterRowStyleSelector is not persisted, when you expand and collapse a group