Most USB receivers for wireless mice and keyboards operate in the 2.4Ghz band. When connecting the receiver to any USB 3.0 port there is potential for interference that can affect the devices performance. The most effective method is to add a short USB 2.0 extension cable between the hub and the receiver to mitigate the effect, and many wireless keyboards and mice come with such a cable for this reason.

Intel has a technical white paper on the behavior for those interested here:

http://www.intel.com/content/www/us/en/io/universal-serial-bus/usb3-frequency-interference-paper.html