This is precisely what fixed it for me. I had BAD 2-3 second interval stutter in VR. Disabled the Asus USB device (mine was slightly differently named than yours) and voila. Buttery smooth now, with G27 wheel and all. Well, there are still tiny judders occasionally, but not even as bad as Dirt Rally 1.0. All in all, it's amazing now. I'll go back and retest this evening, but I wanted to lend some credence to this possible solution that may be affecting some motherboard owners who are still having the stuttering issue even after unplugging all devices.