Hi David,
Indeed, this description is a little narrow.
This mode was added with the first version of RadGridView. Since then its virtualization mechanism has been changed significantly. There were also added many other improvements. That is why with the current version, this mode is not benefiting the user experience on loading the data any more.
There are also potential problems with the new features added on sorting, filtering and grouping.
I will consider updating the documentation with more information.
Regards,
Didie
Telerik
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