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HP Elitebook x360 1020 connected to Thunderbolt 3 dock still glitchy after running driver updates

HP Recommended
HP Elitebook x360 1020 G2
Microsoft Windows 10 (64-bit)

Laptop = HP Elitebook x360 1020 G2 (2018), Win10P, i7, 16G, 512SSD (12", 2 USB-c ports, 1 Displayport)

Dock = Thunderbolt 3


Downloaded and ran all driver updates and BIOS update to the laptop in exact order according to the HP Thunderbolt 3 user manual. Ran all Windows updates. Ran Logitech mouse/keyboard driver update.


GLITCH: USB hardwired Logitech mouse and keyboard connected to the dock are erratic and freeze. The Logitech wireless mouse keyboard behave the same way. An HP Z-Display monitor connected to the dock's Displayport flickered off several times, came back. Ran full Norton scan on the laptop, no viruses. The same mice/keyboards run fine on my HP Elitebook 840 laptop with HP slim dock. 


Coincidentally, this x360 1020 laptop ran a forced Windows update last night that resulted in the laptop going to blue error screen FOUR TIMES in a row during restarts. The fifth time it seemed to stabilize and it has run fine 4 hours now unconnected to the dock.


Is this a bad dock or is the Elitebook x360 1020 glitchy with the Thunderbolt 3, or glitchy with any dock? The Thunderbolt 3 is listed  on the HP support site as compatible with both 2017 and 2018 versions of the Elitebook x360 1020 G2. I have the 2018 version of the Elitebook x360 1020.


Many thanks.

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