An open source bounty is probably the way to go, but we would need to ensure the code is clean, not something someone has put together quickly. Everything runs on one core, one thread at the moment. The reason for this is so we can easily see speed bottlenecks (like pathfinding and the AI). Once the bottlenecks are improved, then we can split parts out into their own threads. This is still a while off though. Philip is working on the pathfinding, and wraitii (last I heard) is working on an AI rewrite to make it more efficient. So we're making progress toward speeding up the game.