It has been observed that many of the active member of this forum has many questions related to “How to create Crystal Reports based of SAP BW datasource for optimized performance”
Here are some of the link that they can refer to:
BusinessObjects Integration Kit for SAP – Crystal Reports 2008
Best Practices: Crystal Reports with SAP BW
Designing Crystal Reports off BW for optimized performance
This is another useful document/Wiki page that users can refer to
Crystal Reports 2008 and BW – Installation and Configuration
Let me know if anyone have some queries.