Found this article about IBM Lotus Notes Traveler 8.5 performance on developerworks. The article reports on IBM® Lotus Notes® Traveler 8.5 performance for both 32-bit and 64-bit environments. It also compares the performance of the Lotus Notes Traveler 8.5 (32-bit) server and the Lotus Notes Traveler 8.0.1 (32-bit) server.