need help with a weird shadow bug in skyrim se

[venees]

hi, i need help with a shadow bug thats happening in my game, the shadow is disappearing as i move my screen, there seems to be 2 invisible lines in the middle of the screen, each removing a layer of shadows as i turn my screen.

idk what's cause this problem i tried uninstalling my mods and changing my pref ini settings but its still here, Please help!!!

https://imgur.com/a/skyrimse-shadow-bug-EFyCx7F(video turns out abit blurry but you can see the shadows on barrel and walls just disappearing when i move the camera)

[DoubleYou]

The game's shadow system does this. You can use Bethini Pie's preset settings to fix.