Board Thread:Skyrim/@comment-1401879-20130526084217/@comment-6881629-20130730150838

Yes but frost spells can cause a kind of freeze effect making the target move in slow motion making the stagger last longer, you could enchant the Crossbow with frost damage and get the effect that way but at least for me the spell seems to causes the effect more often than the enchant (unless its me getting hit).