GridView touch scrolling

[Szymon]

I have a problem with touch scrolling in RadGridView on production machine (analog resistive touchscreen).
On test environment (W8 Simulator) touch scrolling is ok. After installed this same application on production machine - RadGridView starts lag on scrolling.

Touch scrolling in W8 Simulator: http://www.youtube.com/watch?v=56-xueO9MOU
Touch scrolling on production machine: http://www.youtube.com/watch?v=9grjiZq4kQc

<telerik:RadGridView x:Name="ArchivGridView"
    Grid.Row="1"
    HorizontalAlignment="Stretch"
    VerticalAlignment="Stretch"
    AutoGenerateColumns="False"
    CanUserDeleteRows="False"
    CanUserInsertRows="False"
    IsReadOnly="True"
    ItemsSource="{Binding Path=PagedSource,
    ElementName=Pager}"
    EnableRowVirtualization="True"
    PreviewMouseDoubleClick="ArchivGridView_OnPreviewMouseDoubleClick"
    RowDetailsTemplate="{StaticResource RowDetails}">
</telerik:RadGridView>
<telerik:RadDataPager x:Name="Pager"
    PageSize="50"
    Grid.Row="2"
    AutoEllipsisMode="Both"
    Source="{Binding Path=MeasuresView}" />

Any suggestions?

Everything is ok, when i use mouse for scroll.

[Vlad]

Hello,

 Can you post more info about the grid version at your end?

Regards,
Vlad
the Telerik team

[Szymon]

RadGridView from official 2012 Q3 version.

[Pavel Pavlov]

Hi,
Thanks for reporting the issue! I am going to treat that as a bug. We are trying to reproduce the problem right now . So far our tests went good , however I believe the problem would be exposed on slower machines.

Can you give us the specs on the machine where scrolling lags( e.g. processor speed , RAM , video ) , so we can perform tests with a similar machine and make sure the problem is fixed.

We are in the process of improving touch support right now so the issue will be addressed with high priority.

Regards,
Pavel Pavlov
the Telerik team

[Szymon]

Thanks for your quick reply!

Yes machine is slow, but only touch scrolling lags. Here are specification:
Processor: E6500 - Pentium Dual-Core E6500 2,93GHz LGA
RAM: 4GB (DDR3)
Graphics: Intel Extreme Graphics 2 for 2D/3D video accelerator (Intel 915GM 128MB).
System: Windows 7
Full spec: http://support.elmark.com.pl/advantech/pdf/IPPC-6152man.pdf

Regards,
Szymon

[Pavel Pavlov]

Hi,

A quick update  - we were able to reproduce the problem  and we are already working on a fix .  I am going to notify you once we have a descent solution.  Meanwhile I am updating your Telerik points.
Thanks for the valuable feedback !

Kind regards,
Pavel Pavlov
the Telerik team

[Szymon]

Hi,

Can I please for a quick report about state of this issue?

[Yordanka]

Hello Szymon,

We improved our touch support with Q1 2013 version. Could you test your solution with Q1 2013 binaries? You can also test the touch scrolling on our demos. Please let me know about the result.
 
All the best,
Yordanka
the Telerik team