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CPU usage problem #19942

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CPU usage problem#19942
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appIssues related to the Codex desktop appbugSomething isn't workingperformance

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@shipovalovyuriy
shipovalovyuriy
opened on Apr 28, 2026

What version of the Codex App are you using (From “About Codex” dialog)?

Version 26.422.30944 (2080)

What subscription do you have?

PRO

What platform is your computer?

Darwin 25.5.0 arm64 arm

What issue are you seeing?

Codex App consumes extremely high CPU while idle.

Two Codex Helper (Renderer) processes constantly use around 125% CPU each (~250% total) even when there is no active interaction.

This happens right after launching the app and persists indefinitely.

CPU usage spikes immediately after opening Codex
No prompts are running
No MCP servers or extensions actively used
Fan noise and system load increase significantly
Issue persists across sessions

Image

What steps can reproduce the bug?

Just launch app

What is the expected behavior?

No response

Additional information

No response

Activity

  1. shipovalovyuriy
    added
    appIssues related to the Codex desktop app
    on Apr 28, 2026
  2. github-actions
    added
    bugSomething isn't working
    on Apr 28, 2026

  3. github-actions commented on Apr 28, 2026

    @github-actions
    github-actionsBot
    on Apr 28, 2026 – with GitHub Actions
    Contributor

    Potential duplicates detected. Please review them and close your issue if it is a duplicate.

    Powered by Codex Action

  4. h12613 commented on May 3, 2026

    @h12613
    h12613
    on May 3, 2026

    I want to upvote this issue. Codex is using pretty crazy amount of CPU even when it's idle

  5. etraut-openai
    added
    performance
    on May 3, 2026

  6. rudian commented on May 6, 2026

    @rudian
    rudian
    on May 6, 2026

    Honestly, Codex sudden CPU spikes caused other apps on my Macbook to crash frequently, or Codex itself to crash repeatedly....... the codex desktop really suck.....

  7. shipovalovyuriy commented on May 6, 2026

    @shipovalovyuriy
    shipovalovyuriy
    on May 6, 2026
    Author

    fixed for me in newer version. If someone still has the problem try turning off popout window hotkey
    Image

  8. etraut-openai
    closed this as completedon Aug 4, 2026
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