As I expected when you said "the game is lagging". Some sound engines rely on a good framerate. If the framerate drops, then the sound will stutter. You have a deeper underlying problem.
@desphiria wrote:
My Speaker Configuration I think is Stereo I unno, I don't know how to tell.
You can tell by counting your speakers. Stereo means 2 speakers. 5.1 means five speakers and a subwoofer.
When buying a game, it's good practice to look at the system requirements. Always keep in mind that your Intel HD graphics is not technically a graphics card but an integrated graphics chipset. There are few modern 3D games that support them, like MOBA games, The Sims and a few others. Dual core processors are also insufficient for Dragon Age Inquisition.