Sound Bug (Gunshot Issue) [Solved]

Since the update yesterday my gunshots sound EXTREMELY quite compared to everything else, almost as if they were 50 feet away. Yelling, explosions and EVERYTHING else is perfect, but just my gunshots. Ive tried a repair - nothing. Any ideas?

Edit: I solved the problem by doing a clean install of the game and my audio drivers. Realtek drivers and Nvidia HD