[RuDy]

I was troubleshooting this issue for a while.
At home we have two laptops Lenvo (some i5 corpo crap) and ASUS Zenbook (one of top).
We use both with LENOVO Dock Pro (via USB-C cable).

My GF noticed that when she is using her corpo laptop she has really high CPU load and noisy fan. Time to time her mouse froze and whole system was hanging. As it is 10+ yrs in IT for me, I was bit surprised to see SSD/i5 Intel hanging on Office Apps + Chrome.

Sooo... I compared it with our ASUS. Both ot those machines run Windows 1909 (corpo) and 2004 (Asus). Both are time to time used with LENOVO Dock Pro. We have two external monitors connected to Dock.

As long we were using Asus, with 8 cores, CPU load was marginal and we could not even hear FAN.
With Lenovo and its 4 core CPU, just after few minutes of usage, FAN and CPU goes crazy.

The test I did was just simple moving mouse cursor between two external monitors:
ASUS: up to 10% CPU on task: Windows Driver Foundation (Display Link)
Lenovo: up to 20% CPU on Windows Driver Foundation task.

Same tests with running YT video in background. Both in Chrome and showing same video. Moving really fast cursor between monitors.
ASUS: up to 15% CPU on thread: Windows Driver Foundation (Display Link)
Lenovo: up to 25% CPU on Windows Driver Foundation task.

If you add Chrome CPU util, it ends up:
ASUS: Up to 35% summary CPU load.
Lenovo: up to 65% CPU summary load (where 25% is Windows Driver Foundation).

[See attached screen]

Out of tests:
My GF running: MS Teams, Outlook, Chrome and few other apps:
CPU between 80-100% avg, almost whole time.

We connected only 1 external screen via HDMI:
CPU load: up 50% in avg. CPU load.

So question:
Do we really should use Dock with USB-C + Display Link?

Now she (My GF) is happy using two monitors via HDMI and Display Port interfaces, CPU utilization is low and FAN rarely hits top speeds.

"Better is enemy of good"
RuDy