Frame rate has been the only metric for comparing performance in games. Even at smooth frame rates, however, gaming can be uncomfortable if there is a significant amount of input lag \u2013 the game responds to controls with noticeable lag. There are countless tools for measuring frame rates, but unfortunately not for testing responsiveness. Here we introduce the specialized Frame Latency Meter recently made available by AMD.<\/p>\n
In single-player games, players typically prefer the highest possible graphics quality. In competitive gaming, the opposite approach is more common. There are several reasons for this: lowering graphical details helps achieve higher frame rates (FPS), which reduces latency. It also removes unnecessary visual effects and objects, simplifying the scene and making it easier to spot important elements and stay oriented.<\/p>\n
With higher frame rates, motion becomes less choppy and more fluid, allowing players to better track fast-moving objects and react more precisely to sudden scene changes. The reduction in significant differences between frames makes characters\u2019 motion easier to recognize and makes aiming easier. Incoming shots are also more distinct, allowing players to anticipate and dodge them more effectively.<\/p>\n
Lower latency is crucial for reducing the delay between a player’s input, like pressing a key or clicking a mouse, and seeing the action taking effect on the screen. Minimizing this lag allows players to react more quickly to on-screen events, resulting in gameplay that feels more responsive and seamless.<\/p>\n
The average human reaction time to visual signals is typically between 200 and 250 milliseconds. For experienced players who have trained their reflexes, this time can be slightly shorter, usually between 150 and 200 milliseconds. Given the reaction times being so long, one might think that an additional difference of forty or twenty milliseconds in a game\u2019s response time wouldn\u2019t matter much, as human senses can\u2019t detect such a slight variation.<\/p>\n
In real life, responses are instantaneous, which is what the human brain expects. Any further delay disrupts this expectation, making players feel they have less precise control over their actions. Although a difference of 20ms might be too subtle to consciously notice, it significantly impacts the brain’s ability to synchronize inputs with on-screen responses.<\/p>\n