For the record I am using Hitman's animation overhaul and have no recollection of installing any other animation mods that may have changed this, though I have tried reinstalling the animation pack to no success.
It is almost certainly coming from a mod as I disabled Archive Invalidation and the animation looked entirely normal. I was wondering if anyone a little more familiar with the animation files knows which particular files affect the 1h and 2h animation while aiming down the iron sights? Animation looks perfect outside of Iron sights. I can't provide a video, but it's not really necessary, it's pretty much what I said, there is no movement in the animation, just a stationary gun shot. When firing certain weapons in first person (namely pistols though a few 2h rifles have similar issues) there is no weapon sway or kickback.
I've noticed an issue with my weapon animations which is really breaking my immersion.
