If you're seeing issues with graphics rendering such as entire tiles of graphics within the game appearing as a single color, sometimes shifting between a single color and the fully-rendered graphics within that tile, try the following setting from the Options menu before launching into the actual game:
Options --> Screen Effects --> Bloom
The default option "HDR" seems to rely on DirectX for rendering, triggering the issue. This option was tested successfully against the Steam Edition of Fallout: New Vegas without any mods or additional patches installed. It may work as well on non-Steam builds such as GOG versions.
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Aaron Smith on 2018-01-17 21:32:05
