: After loading a level, press the tilde ( ~ ) key and type fov 90 (or higher, like 100) to restore a natural perspective.
Setting a widescreen resolution without adjusting the FOV will lead to a "zoomed-in" effect where the top and bottom of the image are cut off. : After loading a level, press the tilde
For a more automated experience, community-driven tools provide additional fixes for modern systems. MOHAA Revival - How to get 1920x1080 widescreen resolution? : After loading a level