Input lag

In video games, input lag is either the delay between the television or monitor receiving a signal and it being displayed on the screen (see display lag below), or the delay between pressing a button and seeing the game react.

Display lag is a phenomenon associated with some types of liquid crystal displays (LCDs), and nearly all types of high-definition televisions (HDTVs). It refers to latency, or lag measured by the difference between the time there is a signal input, and the time it takes the input to display on the screen. This lag time has been measured as high as or the equivalent of 3-4 frames on a 60 Hz display. Display lag is not to be confused with pixel response time. Currently the majority of manufacturers do not include any specification or information about display latency on the screens they produce.