If you add a new network view, and choose grouped heirarchy, you choose the fields after the network has rendered. (Relational asks you to choose the fields and relationship before rendering).

When you work with a large file, grouped heirarchy is a problem. The first time you add a grouped heirarchy network, It seems to default to a 3 field radial network with the first 3 text/category fields selected. On a large data set, rendering this network could take a LONG time. I got "Omniscope Unresponsive" popups.

Please render a network with no fields checked. Or display a warning message "The fields you have selected may cause Omniscope to be unresponsive" - or both.

This is the same problem with the old Tree view .