What are the display modes for the The Last of Us: Part I and what do they mean?

Display Modes:

Fidelity - Favor resolution over framerate (Rendered at 4k, target 30fps).

Performance - Balanced resolution and framerate (Rendered at 1440p, then output at upscaled 4k or 1440p per Video Output system settings; target 60fps).

Unlocked Framerate - Maximizes framerate on supported televisions for either Fidelity or Performance Display Modes.