I've wpf application, where I load large data (into Wpf DataGrid) and handle multiple events per 1-5 seconds..

I have a performance issue with datagrid - rendering takes too long and freezes my app until it's all rendered.

QuestionTester. View.QuestionVi ew:

Code:
<UserControl x:Class="QuestionTester.View.QuestionView"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
...