While this looks astounding compared to where computer graphics was decades ago, it still often looks fake, both the terrain and the characters. Why is that, w

While this looks astounding compared to where computer graphics was decades ago, it still often looks fake, both the terrain and the characters. Why is that, what is left to improve? Obviously character motion (maybe more variation so every motion captured playback is not identical), but even the cities and nature have some quality that seems fake. Maybe it's a limitation of my monitor, the fact that it can't display true daylight colors with UV? But live film or video looks reasonably real on the same monitor. Something (or several things) is still missing, the results still look Unreal.