People tends to compare latencies of devices to human cognition-action loop and declare it irrelevant, but paraphrasing what I’ve heard from a gamer, their understanding is their ability to eyeball sub-10ms range latencies comes from a fact that their I/O loop runs synchronously to real time by training, that added latency can disrupt and force re-adjustments in detectable ways. Like 1PPS signals can be used to sync time in orders of picoseconds, precision of an event is not limited by frequency, only by deviations. Isn’t that interesting?