Issues with Lighting

Hey there, what could be causing this lighting issue? The red blochiness on the ceiling of this cave? I can’t figure it out. It’s not the normal map, nor the metallic setting or roughness. I am going bonkers trying to figure it out. Thanks in advance.

So I found ONE thing that has fixed this issue…so far. I enable Anti-aliasing FXAA method in the post process volume and it removed this issue completely. I’m concerned this may not be the best way. Correct me if I am wrong.

looks to me actually like you have an alpha map in your normal?

This isn’t the issue. There is nothing wrong with the material at all. I’ve looked and tested this to confirm it.