I have a dashboard created that shows the performance for a given territory. It blends data from 4 different sources. I publish the final dashboard to my server for the retail rep to use on their iPad. Although they are connected via 3G the server performance is slow so I have created an extract for their territory. The performance is better. Problem is, how do I go about creating 27 different extracts for the 27 reps? I don't get the option to change the extract name.
If you want to limit the amount of data to just one territory for performance reasons, then you have no option but to publish 27 dashboards, with their own extracts - one for each rep.
Have you tried user filtering, context filters and extract aggregation? They may not work for you or may not improve performance, but one can only try.