Reg- Performance of program

Hi experts,

I created a dynamic table which is contains dynamic columns and dynamic rows and am displaying it ALV.

In this ALV am displaying Columns as field Catalog and rows from normal Internal table.

In one suitation am having 20 columns and having 5,000 rows.

when i try to execute a alv report with the above columns and rows it is taking too much time to display the output of report.

Please give me suggestions how to reduce the execution time

for this report...

Note:

There is no problem from database retrieval side and problem is in filling dynamic table.

Suitable answers with Maximum points...