Naturally something will look best at its native resolution. Switch will look better on A 55” 1080p TV than a 55” 4K due to the 4K having to compensate. Unless your TV is too big for your viewing distance, or you look at it closely, you’re not likely to tell though. I’m personally not getting a 4K until a console I care about requires it, and also since I bought an HDTV literally the year before they became mainstream in price, it would just be too soon.