I found something that works!
It could be that the lighting UV’s were bad. I admit that I’m still new to Unreal and am coming from a background of traditional rendering. The geometry comes from SketchUp and I’m using datasmith to import it, so it’s not the best content in the world.
I made two changes, so it could have been either one. I tried combining the geometry of the wall with the ceiling to make it one mesh; my theory is maybe there were some weird light bounces between the two since it’s at an acute angle. There was also a tiny hole where the wall met the floor near the window that I filled in…maybe a thing beam of light was coming in to cause the weirdness.
Either way, I’m happy it’s finally fixed and hopefully this post can help someone else down the line! Also, thank you for your help!
-Ben