when you say big, how may rows are we talking about?
Which template type are you using in Nprinting?
If you are using Excel for example, the pivot table will come in as an image and you can control with Excel tempalte to have the width and length fit on a page but based on the size of the table, it could be too small to read
I would suggest bringing the table into an Excel tempalte in nprinting, make sure the width and height are set correctly within the tempalte and preview the report - it should be close, if not exact to what you sent me.
The issue becomes when printing, you would need to do the scaling setting on print to fit all on 1 page