Ben reached out to us directly and we were able to resolve the issue by moving the dongle for the wireless mouse over to a USB 2.0 port on the back of the dock.
Doing this helps because there was likely a RF interference issue occurring as the receiver for the wireless mouse operates on the 2.4GHz frequency band. By moving to the dongle over to a USB 2.0 port, we’re moving it out of this frequency band and we’ve found that this generally helps with this interference. We have a blog post that speaks to this in more detail for those that are interested (https://plugable.com/2017/03/17/troubleshooting-wi-fi-performance-and-wireless-keyboard-mouse-issues-on-usb-docking-stations/).
Thanks!