Comment by mrguyorama

Lots of us HAVE tried using a TV as a primary monitor, I did for years.

Then I bought a real display and realized oh my god there's a reason they cost so much more.

"Game mode" has no set meaning or standard, and in lots of cases can make things worse. On my TV, it made the display blurry in a way I never even noticed until I fixed it. It's like it was doing N64 style anti-aliasing. I actually had to use a different mode, and that may have had significant latency that I never realized.

Displays are tricky, because it can be hard to notice how good or bad one is without a comparison, which you can't do in the store because they cheat display modes and display content, and nobody is willing to buy six displays and run tests every time they want to buy a new display.