Experience doesn't agree with this however. Pretty much every game engine in existence has a well-tested UDP-based networking stack, without which low-latency g

Experience doesn't agree with this however. Pretty much every game engine in existence has a well-tested UDP-based networking stack, without which low-latency game play simply wouldn't be possible. The other thing this statement ignores is that TCP currently has serious issues which I would call performance bugs, so it isn't even setting the bar particularly high.