Input ready query performance

Hi Experts,

We are working on input ready queries. But the input ready reports are taking lot of time around 10 to 15 mins to display the results and hence the planning functions like save are also taking lot of time.

We can't use the OLAP cache as these reports are developed on Aggregation level.

Could somebody guide me how to improve the performance of input ready queries.

Thanks in Advance,

Raj