When looking down the sights of a rifle with the hunting scope attached, the weapon sway is absolutely ridiculous, trying to scope out a town from afar is a headache inducing experience.
I understand you should need to hold breath when taking a shot, but you shouldn't need to use it when simply scoping out an area.. the character acts like they have a broken arm, kuru twitches and just got done running a marathon, neither of which are the case in this video.
Patch 1.17 vanilla settings - character fully healthy without injury and there is zero mouse input, the game is doing everything.