How to optimize FETCH NEXT CURSOR

Hi All;  

  I am in charge of optimizing an ABAP Code. After debugging the program I found that the most CPU consuming operation is :

FETCH NEXT CURSOR s_cursor

                   INTO CORRESPONDING FIELDS OF TABLE t_table

                   PACKAGE SIZE s_s_if-maxsize.

How Can I reduce the execution time of this code to get a better performance of the ABAP program.

Regards

Anis