Game engines make latency concrete. A frame budget turns performance from an abstract virtue into a contract: every subsystem gets a slice, every allocation matters, and every slow path becomes visible to the player.
That mindset transfers well to backend systems, ML tooling, and technical interfaces. A system that feels responsive usually has a careful data path underneath it.
This note will eventually collect lessons from Unreal Engine, C++ desktop tooling, profiling workflows, and latency-sensitive services.