Lower latency is not the ultimate goal. Energy efficiency, for example, is another important factor DEs have to optimize for, that can be negatively affected by lower latencies.
Ultra-low latency on a laptop, that will poweroff in an hour is probably a bad tradeoff.
You either check whether any state has changed, doing nothing in the happy path at the price of slightly higher latency, or you just go with the unhappy path all the time.
Ultra-low latency on a laptop, that will poweroff in an hour is probably a bad tradeoff.