you are talking about a different mount than the I/O. I have no experience with the suction cup mount that you are refering to. The I/O mount, when mounted to a solid bar, has sufficient length and connections to allow vibration at higher speeds. The exact same camera was used for each mount, and was securely and positively mounted to the bar and the camera mount. Nearly everyone I have talked to has the same problem with the I/O mount. Some did not realize the problem until they saw my video with the newer VS mount. If you have ever seen the top gear videos, the result is the same, people move, camera doesn't. And this is using a camera that doesn't have stablization software,(i.e. like sony). -Bob