[jaywalk]

Most newer TVs have a game mode that significantly reduces latency by getting rid of almost all processing, including stuff that you otherwise can't disable in the menu.

[sp332]

And some TVs only offer low latency on certain inputs, so it pays to do some research.

[copperx]

Research sounds like a huge time investment. Just read the manual.

[Dylan16807]

Research means you look up the TVs you're considering buying in a giant chart on websites dedicated to this.

Reading the manual doesn't help when your TV doesn't have a fast mode. And many don't.