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

[Nickski]

1. OS Build Info

OS Build: 10.0.14393.0 (Debug = False)
OS Build Label: 14393.rs1_release.161220-1747


2. Monitors Connected:

Through USB (3.0 I believe)

DELL P1911 Manufacturer: DEL ProductCode: A074 Serial: 1WKJV14A08DS Built: 16/2011 @ 1440 x 900

DELL P2314H Manufacturer: DEL ProductCode: 4098 Serial: J8J313C6BLUL Built: 49/2013 @ 1920 x 1080


3. CPU

CPU: Intel(R) Core(TM) i3-3220 CPU @ 3.30GHz

No other information about CPU can be found in the system_details.txt file.


4. GPU Details

Graphics: NVIDIA GeForce GTX 550 Ti (NVIDIA)
Graphics Driver: 21.21.13.7633 Dated 2016/12/11

Graphics: Intel(R) HD Graphics (Intel Corporation)
Graphics Driver: 10.18.10.4358 Dated 2015/12/21

The Intel internal graphics is used to take the load off the CPU when streaming through Open Broadcast Studio.

5. CPU Usages

WUDF @ 10-30% - It can go up to 50% in extreme cases - especially when using things like Open Broadcast software (that uses around 25% of my CPU).

Windows Desktop Manager stays at 0.5% to 2% CPU usage.

6. Total CPU Usage

75%-100%

7. Analysis

7a: When completely static with just the task manager open, WUDF idles at around 0.5%-2% CPU usage.

7b: Same as 7a - uses around 0.5-2% CPU with the Windows clock open.

7c: When just moving the mouse around the displays WUDF uses around 8-12% of the CPU.

7d: When moving a window around WUDF usage goes up to around 20-25% of the CPU.

7e: VLC player playing a 1080p video: 15-25% WUDF CPU Usage.

7f: Full screen video on:

- Google Chrome = 7.5-15% WUDF CPU Usage.
- Full screen video on Microsoft Edge = 7.5-15% WUDF CPU usage.
- Full screen video on Firefox = 10% WUDF CPU Usage (that said firefox used about 40% of my CPU whereas the other browsers used around 10%)


Same video used on all browsers.

7g: I will have to get back on that one. No real games installed at this current moment in time.

8. Display Link Driver Installed

DisplayLink Graphics Driver (8.1.848.0) on 2017/01/01 Status is Installed