Is there a post process volume in the scene? It’s where RT Reflections and Translucency can be enabled. Default is raster, so it needs enabling for both of those in the PPV. Double check that the PPV is Unbound too, in Post Process Settings of it. It sounds like it would be a material issue, though I’m not sure how. It could potentially be a skybox / skysphere issue with lighting, where skylight and/or directional light is picking up a red color from skysphere and spreading it to a specific area of the scene, such as in the reflections. I’ve encountered a similar issue with blue instead of red, and green…though the color getting picked up wasn’t from a blue-only or green-only material surface. As far as I remember, RT works with a certain color setting, but don’t remember which (out of RGBA, sRGB, and any others if there is more) in the material. Though that could’ve gotten a fix since I read it.