When dragging the fields to create the table, it will hung

Hi Experts:

The customer did as below:

BI publisher :

Home > Create Report > Use Subject Area > Data Model (use customer’s table) > next >
Select Layout > next > Drag fields from the Data Source to create the table > when the table is small is will be ok, but when the table is big , it will hung.

When leaving hung, the memory of sawserver.exe and beasvc.exe are increasing.

Is there any way can resolve this issue (no hung)?

Regards

Sun