Have you had to consider dropping features in favor of getting acceptable performance projects before? To prevent such situations we (CRM Development) have collected "Tips & Tricks" relative to the main transactional objects like opportunity, quote, order and service contract and how to make sure you set them up for maximum performance.

Please make sure you read this early on in the project to avoid Sweat and Tears down the road.

Order/Contract Performance Tips & Tricks can be found in the Wiki at http://wiki.sdn.sap.com/wiki/display/CRM/Performance+Tips+and+Tricks

Other Performance tips for the technology stack and specific to CRM Interaction Center can be found at System Performance Tuning for Beginners and at

SAP CRM Interaction Center 7.0 Performance Topics: Where to Start.