Input lag is probably one of your minor considerations when shopping for a new TV. More often, people are concerned with specs like screen size, panel tech, refresh rates, or the platform it's running. It can matter quite a lot in some circumstances, though, above all gaming.
Case in point: on a podcast I listen to, Giant Bomb, one of the hosts discovered that while his sister was excellent at some of the hardest action games out there, this was because she'd been trained on wildly bad input lag that forced her to overthink every move. After he changed a few TV settings, these games were almost a breeze. I wasn't even surprised — sometimes, a split second in an action game can mean the difference between parrying an attack or repeating a boss encounter for the tenth time.
Even if you don't play games, input lag can be an annoyance. In extreme scenarios, it can make scrolling through menus feel like a slog, or connecting a computer more trouble than it's worth. There are a few ways you can deal with input lag short of buying a new TV, thankfully.
Switching inputs to Game Mode
Or another equivalent option
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