The environment isn't just a setting; it's the atmosphere of a scene. By using the environment as atmosphere, you can manipulate the reader's mood regarding the situation the characters are facing in a scene. So, they might immerse themselves in the scene. For example,
Corpses, blood, broken swords, and the scorching sunlight on a battlefield depict the brutal and tragic circumstances of war.
Trash, rats, sewage, and dim lighting in an alleyway depict a gloomy and squalid situation.
The sound of crickets, a gentle breeze, moonlight, and ripples on the lake's surface convey silence and a tendency toward melancholy.
The texture (detail) of your environment will determine how readers perceive the atmosphere of a scene. Treat the environment as an additional character involved in a scene. It will make your scene feel more alive.
The question shouldn't be how detailed or undetailed the environment is, but how detail of the environment can build atmosphere within a scene to influence the reader's mood?