If your mouse or keyboard is experiencing lag/latency—jumpy/jerky mouse pointer movement, missing key-presses, duplicate key-presses, etc—when connected to the device. This may be related to an issue with Intel Management Engine.
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