Not sure if this topic belongs in the Technical Support subforum.
So here's the problem. The iron sights when playing on Capital Wasteland (a.k.a Fallout 3) seems off. Whenever I shoot a gun, the bullet always goes lower than the actual iron sights. However when I play on the Mojave (Fallout New Vegas) it works just fine.
The only mod I have that affects the camera in any way is the Enhanced Camera mod. I'm not sure why this problem only happens in FO3 for me.
See how the bullet goes lower than the crosshair.



