Why is my DirectionalLight suddenly taking 17ms to render?

Hey!
So recently I was designing the outskirts of a level, when I suddenly notice that my game drops to about 30 fps when I’m looking in a specific area. I narrowed down the occurrence to the back-right corner of the starting house. Weird thing is, it’s happening outside, but not inside. Turns out, it was taking my DirectionalLight 17 ms to render (In the ShadowDepth pass obviously)! However, in the area of the drop the lighting is literally what you’d call “simple.” And again, it only does this there, nowhere else.
I haven’t seen anything like this before, even though I had to deal with this kind of stuff. I already removed all particles from the house and all the reflection captures.
Thank you for suggestions in advance!