There was a post here a few years ago I was involved with related to this kind of issue. With the help of Google I found it again at this site.
It is caused by RF interference from the USB 3 plug or port. BE SURE to click on the link Tony provides early on in the post to an Intel URL.(https://www.intel.it/content/dam/www/public/us/en/documents/white-papers/usb3-frequency-interference-paper.pdf )
It explains in detail what is likely happening.
Let me know if you come up with a solution.
