How can the floor map not be reflected on the ceiling?

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  • This image export quality is 'ULTRA'

    And I wonder to reflect ciling.

    How can I fix this green ceiling?

    Welcome to our forum! :)

    If you set the Rendering Quality on Ultra, Global Illumination will be activated, which will make colors emit themselves onto different close by surfaces as it would in real life. Also, have you tried to lower the brightness of the texture itself, as in, use a darker toned grass? If you put the slider to "Medium", this effect should furthermore lessen.