FPS drops when i look down

Why does my fps drop when I look down? And when I disable the “Cast Shadows” option on the sun, the problem goes away

Use the command

stat gpu

And see what’s slowing the gpu down. That’s assuming it’s on the GPU. To find out for sure use

stat unit

It is definitely strange that looking down causes it. Are you using lumen and virtual shadow maps?

yeah i’m using both