Graphic lag and issues with Zbook Studio G3

[StiffBeuf]

So, I'm running the Zbook Studio G3 for work, on a Thunderbolt 2 dock (the square boxy thing).

The problems I'm seeing is that when connected to the dock, the graphics gets laggy and slow. It's intermittent issues, meaning that a reboot solves the issue, even a logout/login temporarily solves it - which leads me to believe it's a user-scope process doing it. However - the easiest way to replicate is to have the laptop undocked, and then put it to sleep, connect it to the dock (via the combined USB-C and barrel cable) and then wake it - via the dock top button. This usually leads to Windows dragging are laggy, videos hack/lag, and a general feeling of un-smoothness.

I never experience anything similar when not using the dock.

I have two 26" Philips monitors connected via DP, and not any major other load on USB, other than dongles for a Plantronics headseat and a Logi G360 mouse.

It's becoming unusable, and I can't get anotheir third party dock (like the Cable Matters USB C Dock, or something, because the ZBook Studio G3 can't draw that power from the USB-C, but needs the barrel cable.

I'm left with either a crappy dock that makes this performance laptop feel like a crap Windows Vista machine, and I have no options for docking.

I've upgraded all software I can think of, including BIOS upgrades, via HP SoftPack. Nothing makes it any better.

[soccer_dan]

first thing to do is run HP Image Assistant and update BIOS, drivers... AND dock's firmware - which is suggested by HP IA if it sees a need for the update

[StiffBeuf]

BIOS seemed up to date. I installed all the recommended driver updates with HP Image Assistant last night. Including an update for the dock. I've changed to a Thunderbolt 3.

Its weird that I didn't get the same updates via SoftPack, where I've installed everything. What's the difference there? 

I'll see how it works out over the next few days. 

[soccer_dan]

HP Image Assistant uses constantly updated factory images as a source to compare against a user's device... Built-in algorithms then determine if the system being analyzed matches the information gathered from the HP source... These source images can be updated up to twice per week, if needed