I have a problem with iron sights thats been bugging me for ages. When aiming with 2 handed guns (e.g. cowboy repeater / brush gun etc), the rifle will 'shake', kind of like my character has Parkinsons. This is not the 'sway' you get when aiming with low guns skill / strength / agility, and this only happens when in an external area cell (e.g. in the middle of the mojave). When in an internal cell (e.g. a building or cave etc) the aiming is fine.

Any idea what this is? I don't use any mods that would affect the aiming animation, or use any weapon mods. I've searched online and through forums but cannot find anything.

I don't have a problem with the aiming alignment, that seems to be fine. It's just the weapon model that shakes.

Any help would be very much appreciated.

(Also posted this on nexus forums)

If you do use mods, I would suggest you try disabling them first. Uncheck all of them and see what happens. You can leave the official DLC checked.