implemented suggestion by Александр Пекшев: Replace FillPattern = '{Binding CutPattern}' with FillPattern = '{Binding CutPattern, IsAsync=True}' and drawing thumbnails can get even faster
implemented suggestion by Александр Пекшев: Replace FillPattern = '{Binding CutPattern}' with FillPattern = '{Binding CutPattern, IsAsync=True}' and drawing thumbnails can get even faster