[leapmotion_alex]

Much of that is the projector. The experience within the headset itself is much tighter, less than 35 ms from end to end. (Our tech accounts for 12-13 milliseconds, while a 90 Hz VR display and the GPU add about another 22.)

While the experience of latency varies from person to person, we've found that this level generally doesn't register on human perception. Head tracking needs to be less than 20 ms because you're relying on both your vestibular system AND your eyes to be in sync. If they're not in sync, your brain will interpret this as you being ill, and you will feel sick. With your hands, you only really have your sense of proprioception, so the latency restriction is lighter.