Windows 10, high load from WUDFHost.exe Windows Driver Foundation - User-mode Driver

[Kristan]

This is my work setup below. I take the laptop home where I have the same dock, but different monitor setup. There I have one monitor connected via the laptops built in miniDP port to DP on the monitor, then two others via HDMI on the dock (laptop lid is closed, so screen is not in use). Incidentally I have to use the miniDP on the laptop as the DP port on the dock refuses to work. The monitor just flickers between no signal and powered off (another non-displaylink dock with a different laptop works fine with DP).

Happy to try beta/alpha builds. I work in software and beta test for other companies, so know how to provide decent feedback etc.

1. Windows 10 Build Number
Computer: Dell Inc. - XPS 13 9343 4Q5GT32
OS: Microsoft Windows 10 Pro (x64-based PC), No Service Pack, English
OS Build: 10.0.14393.0 (Debug = False)
OS Build Label: 14393.rs1_release.161220-1747

2. Enumerate each display, its resolution and if it is connected to the graphics card or a USB adapter
Primary Resolution: 1920x1080x32
Desktop Size: 5760x1080
Number of Monitors Connected: 3
Monitors Connected:
Manufacturer: SHP ProductCode: 1420 Serial: 0 Built: 2/2015
S240HL Manufacturer: ACR ProductCode: 0289 Serial: LU5EE0018536 Built: 46/2015
S240HL Manufacturer: ACR ProductCode: 0289 Serial: LU5EE0018536 Built: 46/2015
In english: one laptop screen and two Acer S240HL 1080p screens both connected via Dell D3100 dock on HDMI.

3. The CPU ***full*** name
Intel(R) Core(TM) i5-5200U CPU @ 2.20GHz

4. The GPU details
Intel(R) HD Graphics 5500

5. What you include in your CPU usage
With no activity on the indirect displays, WDF is < 1% (average of 0.5%). Activity causes CPU to increase. I can get it to 100% with a youtube video playing on each connected display,with WDUF competing with Chrome for CPU.

6. The value of CPU being used.
By WDF? Anywhere from 0.5% to 30% depending on activity

7. What happens on ALL indirect display
7a. Content fully static
WDF - 0.5%

7b. Some little area changes:
WDF - averages around 1-2%

7c. Only the mouse pointer across indirect displays
WDF - 1.5% on build in screen, 20% on indirect displays

7d. Moving a window
Dragging full 1080p Outlook window around
WDF - 1% on build in screen, 25% on indirect displays

7e. Playing video on VLC
Don't have VLC

7f. Playing video on a browser
WDF - 2% if browser is on built in screen - 30% if either of the connected displays

7g. Game, full screen or windowed?
I don't play games - it's a work PC

8. Which version of DisplayLink driver you are running as
DisplayLink Version: 8.1.843.0
DisplayLink Installer Source: Normal or WU installed
DisplayLink Audio Version: 1.54.0.0 (DisplayLink USB Audio 2.0 Class Driver)
DisplayLink Ethernet Version: 2.34.17.0 (DisplayLink USB CDC NCM Driver)
No DL USB I/O drivers found.
DisplayLink RS Version:8.1.843.0 (DisplayLink Core Software v8.1.843.0)