MetroProgressBar performance issue

[kgroener]

Hello,

In my current project I'm using MahApps.Metro V1.1.2.0.
In one of my UserControls I tried to use the Controls:MetroProgressBar as shown in the following code:

<ItemsControl ItemsSource="{Binding Items}" >
   <ItemsControl.ItemTemplate>
      <DataTemplate>
         <Grid>
            (...)

            <Controls:MetroProgressBar
               Grid.Row="1"
               Grid.ColumnSpan="3"
               IsIndeterminate="{Binding Item.IsBusy}"
               Visibility="{Binding Item.IsBusy,
               Converter={StaticResource boolToVisConverter}}" />

            (...)
        </Grid>
      </DataTemplate>
   </ItemsControl.ItemTemplate>
</ItemsControl>

But once I start the application and the progressbars are shown, the application gets terribly slow and the bars are really laggy.

When I use the default ProgressBar instead of the MetroProgressBar, the application works just fine.

Trying to find out what could be causing this, I found that while the progress bars were shown the application was using increasingly more physical memory as if there was a memory leak of some sort.

I'm not sure why this is happening, but thought you should know.

Best regards,

Koen