PCGH: What is the maximun number of threads that can be calculated separately? Will there be a performance-boost if a quad-core system will be used?

Epic: We're able to scale the thread-structure pretty well. There is a primary thread for the gameplay and a second one for rendering. On systems with more than 2 cores we run additional threads to speed up various calculation-tasks, including physics and data-decompression. So the overall performance benefits greatly from a quad-core processor. Although we haven't looked into the matter yet, I expect an even further performance increase through CPUs with more than 4 cores in future UE-based games.