Input latency refers to the delay or time lag between when you give a command or input and when you see the desired response on a device or system. Full definition
According to Valve, it reached «significant performance increases in graphics processing» with SteamOS, and now it's focused on improving audio performance and reducing input latency on the system level. (techradar.com)
The netcode that governed Mortal Kombat left a lot to be desired, and although the team have had two years to reduce the impact of input latency, the improvements appear to be marginal rather than game changing. (eurogamer.net)
Emitting up to 555 nits, it's one of the brightest screens we've ever seen on a tabler or even a lapotp, and its new ProMotion technology enables smoother scrolling and less Pencil input latency (down to 20 milliseconds) than any tablet on the market. (laptopmag.com)