May be a conflict try to use the sound card and a mic plug in. Normally USB headset give better result and I found that the Cyber Acoustics mic gives better result. Normally with a i5 computer you can use the original sound card without problem.
I read on another answer about USB having limite dbandwidth. I'll try plugging it into one of my USB3 ports which are on a seperate card. The USB2 ports are all on the same bus so maybe that is causing the issue.