Sound going away....

Just bought a new USB headset and the sound works good. But when I start moving in the game, my sound will cut off and doesn't work until I go through a loading screen. Then when I move again, the sound will go away again. This wasn't happening with my old (non-USB) headset, and it isn't the headset going out because I can hear and talk in Skype and Vent just fine. Any help would be appreciated.

Edit: Just tested, and it appears certain sound effects work. Power skills like Hasten and Granite Armor played. Some like Mud Pots played the wrong sound effect. Others like my two area attacks only played the last bits of their sound effects. I was in Atlas Park train station and couldn't hear the background effects (train running on tracks, door opening, the squeaking sound etc.) But when I walked out of the station, I could hear the background effects for being outside (sirens, honking, etc)

Edit: More tests have shown me that having 3D sound enabled is causing the problems. Hopefully there is a fix, because I am the type of person that likes 3D sound hehe. Can any rednames help with this matter?