Windows 10: High CPU usage from Windows Audio.

Hello, i have a very wierd problem. Somehow Service Host: Local Service Network Restricted Windows Audio is making my CPU go high 90%Everytime i end the process svchost.exe LocalServiceNetworkRestricted -p it returns to normal usage.I have tried updating, Asus troubleshooting, Disabling and reinstalling device.Any Ideas?

:)

 

Windows Audio Device Graph Isolation HIGH CPU USAGE

My PC has a Realtek audio driver from Dell manufacturer with Waves maxx audio driver. Windows Audio Device Graph Isolation is using about 25% CPU usage. Enhancements tab is not appearing on playback properties. I want to disable enhancements to reduce
high CPU usage.

I don't want to install Microsoft's High Definition Audio Device for enhancements tab to appear. Is there any way to reduce high CPU usage while having the Realtek audio driver?

 

Windows Audio Device Graph Isolation HIGH CPU USAGE

When I install Microsoft's High Definition Audio Device, only the internal microphone is working and microphone on the headphones is not listening to...(I've tried troubleshooting, setting up the microphone in control panel, reinstalling windows etc..
but nothing worked)

And the other thing is, the microphone on the headphones only listens with the older version of Realtek audio driver and not with the newer version of Realtek driver and High Definition Audio Device.

 

"System" process with high CPU usage

I have exactly the same issue (high CPU usage) on a brand new HP ProBook 440 G5 (i7-8550U, pre-installed Win 10 Pro).

I am pretty sure that there is a problem with audio drivers when the computer wakes up from a sleep mode. I first observed that process flow.exe (audio bloatware provided by HP/Conexant) was consuming (after waking up) ~10–15 % CPU. Here's what I did:

• I have updated Windows to 1709, build 16229.251 and installed all updates --> Nothing has changed.
  
• I have updated BIOS to the latest version provided by HP. --> Nothing has changed.
• I have run Windows troubleshooting and HP Support Assistant checks --> No problems found, nothing has changed
• I have manually updated Conexant ISST Audio Drivers (via Device Manager -> Update drivers). Windows installed a newer version. -->
  CPU usage by flow.exe has disappeared, but process called System in thread ACPI.sys+0x21cb0 started consuming ~20 % CPU.
• I have uninstalled all Conexant software&drivers and manually installed generic High Definition Audio Device drivers provided by Microsoft (Driver Date: 21.02.2018). --> ACPI.sys+0x21cb0 still consumes ~20 % CPU.

Same issues are discussed in these threads on HP site:

• ProBook 450 with high CPU usage - HP Support Community - 6520063
  
• HP Probook 440 G5 Fan issue - HP Support Community - 6567212

The result is I cannot use sleep mode (as advised by this post:
https://h30434.www3.hp.com/t5/Business-Notebooks/ProBook-450-with-high-CPU-usage/m-p/6611446/highlight/true#M149605).