I got a little 30 something inch tv that runs my ps4 games great.
But my wife like to play games with me, and we have a 55” Westinghouse that has pretty bad input lag. I haven’t found a way to fix it yet?
Are there any obscure tips I might be missing or just tv’s that are generally better in this department?

Look through your TVs menu for a Game Mode.

If it’s not there, or already on & you’re experiencing Input Lag, look into a new TV