Given that much of the game uses darkness and lighting, you do notice it quite clearly in a lot of areas, most especially indoors and on an OLED display. Indirect bounce global illumination being the major RT/PT feature here. Objects in darkness are lit accurately as opposed to playing with RT/PT off which gives weird glowing surfaces that should otherwise be in complete darkness, or light leakage through a literal wall or doorway lol.
Plus, if your character build employs a stealth netrunner play style, the you spend most of the time in the shadows anyway.