According to Panasonic, though the optimal viewing distance for a 1080p TV is approximately 1.5 to 2.5 times the diagonal ... Complicating this is that far from all newer games run natively at full 4K ...
Resolution: 4K refers to the screen resolution or pixel density, basically how many pixels are on a screen. In gaming, the higher the resolution the better your game will look. 4K is standard at 3,840 ...