Apple TV 4K - LG C4 OLED

I recently upgraded from an LG C1 48inch to an LG OLED C4 55inch. I have seen people buying the Apple TV 4K as it improves on viewing experience and not replying on the TV processor. Can somebody advise? Also having the Apple TV box will help add screen savers whilst using the OLED TV, LG decided to remove the auto screensaver 3minutes like my C1.