I found the site I linked, rtings.com, to be invaluable in getting the specifics of television lines and their capabilities and qualities. Different TVs will have varying levels of picture quality, and making sure you turn off (and can turn off) various settings that help a TV experience but hurt of computer monitor experience (motion blur, etc) is important. The one I chose had a fairly low display lag for 4k, and supported a "game mode" (which many do). It takes a bit of research to figure out what you should be looking for, but there are some good resources you can find by googling (articles, subreddits) that let you know what are likely the most important attributes in general, and you have to supplement that with your own specific needs.
I don't have one, coworker does, but for coding it shouldn't be too bad. Browsing usually means more scrolling and so you actually will get tearing but if you don't care then should be fine.
Your other reply talked entirely about games so I responded to your actual question.
I wasn't talking about games at all. I was talking about input lag, which for TVs as displays manifests in some negative effects, most notably mouse lag.
Many TVs have a mode to reduce this lag and turn off other processing effects that are undesirable when playing games, and that tends to map well to the settings that make for a good computer display experience.
