Board Thread:Skyrim/@comment-111.94.22.92-20131212155243/@comment-6881629-20151108163456

Only the highest level version of the bow has the problem (see the bows bugs list here). If you got it at level forty five or under it'll work fine, its noise level is set to normal unlike other bows including the lower leveled versions of this bow.

It is fixed by the unofficial patch for PC.