Hello Alexey,

In order to disable the tooltips while scrolling in the XamDataGrid, you can set the ScrollingMode property of the control to "Deferred" (it is "DeferredWithScrollTips" by default).

<igDP:XamDataGrid x:Name="dataGrid" ScrollingMode="Deferred">
    ...
</igDP:XamDataGrid>

If you have any questions, please let me know.