If your playing on the pc just change the ini settings.
I do know though that with SkyRe gravity does have an effect an will hit about a cm below the cross-hair depending on your distance if your using a long bow an with a shortbow i think it hits on target same with a crossbow but i do know that you can just change the settings if on pc an see if any of the mods you have installed have changed it.
As for been on console id suggest clearing the cache apart from that though i have no idea.


Sometimes though when shooting with either bow or a crossbow it happens that when the character is supposed to reload/pull another arrow from the quiver the weapon keeps shooting like a machine gun.
you would get a better responce to post your own string, I don't think you will get the answers to help you here. 