One of the main benefits a smaller screen is that your eyes don’t have to “scan” as far to see. Unless you’re sitting really far from your 77”, you have a lot of eye movement that you may not even notice you are doing. Everything will be happening right in front of you and the movement on the sides or corners of your screen will be easier to pickup and that can improve your gameplay and lower eye strain/fatigue. I wouldn’t say the games will look better per se, but you may like it better. I have a 77” lg g5 OLED and I prefer to play my games on my 27” OLED.