If you get a modern wireless keyboard with 2.4 GHz wireless and use that instead of blutooth, the latency can be great - like you saw. Blutooth is still crap t

If you get a modern wireless keyboard with 2.4 GHz wireless and use that instead of blutooth, the latency can be great - like you saw. Blutooth is still crap though, avoid that if you care about latency. Or reliable connections. Also be aware that despite being able, not all keyboards poll at 1KHz. My old wired keyboard polled at 66 Hz. My current wireless keyboard has a single-key latency around the 1.7 ms range. Better than many wired ones!