Hello Marc,
Thank you for contacting Plugable support! Sorry to hear about this issue. I’d be more than happy to assist you.
We have two possible things that can help with your mouse and keyboard. Since one is wired and the other wireless, I suspect this is probably not an interference issue, but I’ll still post that just in case:
Problem: My wired (or wireless) mouse and/or keyboard are experiencing lag/latency (jumpy/jerky mouse pointer movement, missing key-presses, duplicate key-presses, etc) when connected to the dock.
Solution: Dell released a patch that changes a Windows Registry entry related to the Intel Management Engine that is not Dell exclusive which has resolved these issues for several of our customers using a range of different host systems from different manufacturers. We recommend to try installing this patch if you have some of the aforementioned issues:
https://downloads.dell.com/FOLDER03471411M/13/Dell_Dock_USB_TYPE-C_PATCH_2K0JJ_A00_SETUP_ZPE.exe
Problem: Why does my wireless mouse or keyboard appear sluggish or not work properly when used with the dock?
Solution: 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 dock 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 whitepaper on the behavior for those interested here:
http://www.intel.com/content/www/us/en/io/universal-serial-bus/usb3-frequency-interference-paper.htmland
we have written about the behavior in more detail here (please see the RF interference section): https://plugable.com/2017/03/17/troubleshooting-wi-fi-performance-and-wireless-keyboard-mouse-issues-on-usb-docking-stations/
We also got your direct email with diagnostics and I am looking at that and will be in touch ASAP for the other issues you’re experiencing.
Please don’t hesitate to let us know of other questions.
Thanks again for contacting Plugable support and best wishes!
Joshua Henry
Senior Engineer
Plugable Technologies

http://plugable.com | http://performance.plugable.com/