Go into control panel and bring up the audio console SB installs for its sound cards. Disable all effects that you can. You will have things like EAX Effects and CMSS 3D. Then from the creative app folder bring up the speaker detect application and tell it you are using a headset. If you leave the speaker detect at 4.1 or 5.1 or whatever other than HEADSET it will use up time trying to feed surround sound speakers through your headset.