If you use 1000hz polling like my latency tester and keyboard do the latency becomes less than 1ms which is pretty small compared to the other factors. See http

If you use 1000hz polling like my latency tester and keyboard do the latency becomes less than 1ms which is pretty small compared to the other factors. See https://michael.stapelberg.ch/posts/2018-04-17-kinx-latency-measurement/ https://michael.stapelberg.ch/posts/2018-04-17-kinx-latency-... I'd optimize lots of other things like trying to avoid the compositor, higher refresh rate monitors and lower travel keys before I'd look at USB3.