Windows 10: Windows 11 Pro - appmodel process very high CPU usage

I noticed a consistent high CPU usage that last for up to a minute whenever I start fallout shelter from steam. I have also noticed other times when I am not able to start the task manager when I see some app like Visual Studio not responding. I ran all standard troubleshooting like scanning for viruses, optimizing disks, windows updates and reboots.Most of the time CPU usage is below 5%. Even when I am playing games the CPU usage is below 50%. It is a gaming desktop with 64GB RAM and all SSD. Just wondering if there is anything I can do to not trigger that appmodel

:)

 

system process high cpu usage

Hello,

To fix high CPU usage issue, please refer these steps:

Try to identify the process creating this issue.

Download Process Explorer from Microsoft:

Process Explorer - Sysinternals

Run the tool then select the system process, right-click and select Properties.

Switch to the Threads tab. This will show which file is using the excessive CPU usage, from which you can then attempt to diagnose it.

Also refer: [FIX] Windows 10 High CPU Usage Problem

Let us know if this helps!

Note: Included link in this reply refers to blog post by a trusted Microsoft MVP.

 

"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).

 

The "system"process is using constant CPU in windows 11

The "System" process is a core Windows process that is responsible for managing various system resources, such as the CPU, memory, and disk. It is normal for the "System" process to use some CPU resources, but if it is using a constant high CPU usage, then there may be a problem.

Here are some possible reasons why the "System" process is using constant CPU usage in Windows 11:

• Corrupt or outdated drivers: Outdated or corrupt drivers can cause the "System" process to use high CPU resources. You can update your drivers by going to the website of your computer manufacturer or device manufacturer and downloading the latest drivers for your device.
  
• Malware: Malware can also cause the "System" process to use high CPU resources. You can scan your computer for malware using a reputable antivirus program.
  
• Background processes: There may be background processes that are running and using up CPU resources. You can use Task Manager to identify and end these processes.
  
• Hardware problems: If you have recently installed new hardware, it is possible that it is not compatible with your computer and is causing the "System" process to use high CPU resources. You can try uninstalling the new hardware or updating its drivers.
  

If you have tried the above steps and the "System" process is still using constant CPU usage, then you may need to contact Microsoft support for help.