You can temporarily hide the PP in the editor and it will be ignored.
Looks like Lumen to me. You can get some more clues using the Lighting Only view mode or Lumen > Lumen Scene. “Affect Distance Field Lighting” should work, as will “Affect Dynamic Indirect Lighting”. If you still want them to affect GI but just mitigate the effect, you could try lowering the Base Color value of the materials in the scene (this green looks out of range for PBR), or play with the other Lumen PP settings for things like distance.