The international circuit has players on the road 50% of the time — and it's hard to focus on your backhand when you're worrying about being on time for homeroom.
Moreover, this brain circuit for reward is working, and you're feeling intense energy, intense focus, intense motivation and the willingness to risk it all to win life's greatest prize.
The high-speed circuit designers focus more and more on the signal integrity because of the more complicated systems, higher rout densities and higher data throughout etc.