Came across this issue that Hyperion Planning a data form (it was one of the biggest form we had) is taking a while to show the data and shows "fetching data" for a while.
For On premise Hyperion Planning
Well there is flag available (for quite some time) to change the value of the number of the rows & columns are populated in the data forms.
As per the on premise document http://docs.oracle.com/cd/E57185_01/epm.1112/planning_admin.pdf
Setting Application Defaults (For all the users)
This is was tested on 11.1.2.4
For On premise Hyperion Planning
Well there is flag available (for quite some time) to change the value of the number of the rows & columns are populated in the data forms.
As per the on premise document http://docs.oracle.com/cd/E57185_01/epm.1112/planning_admin.pdf
Setting Application Defaults (For all the users)