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codex - 💡(How to fix) Fix CPU usage problem [1 comments, 2 participants]

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openai/codex#19942•Fetched 2026-04-29 06:25:02
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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

<img width="364" height="83" alt="Image" src="https://github.com/user-attachments/assets/ded6be53-8785-4776-a7f1-998263a720f2" />

What steps can reproduce the bug?

Just launch app

What is the expected behavior?

No response

Additional information

No response

extent analysis

TL;DR

The issue might be resolved by investigating and potentially disabling or updating the Codex Helper (Renderer) processes that are consuming high CPU.

Guidance

  • Investigate the Codex Helper (Renderer) processes to determine what is causing the high CPU usage, as they are the primary contributors to the issue.
  • Check if there are any updates available for the Codex App, as version 26.422.30944 may contain a bug that is causing this behavior.
  • Consider reaching out to the Codex App support team for further assistance, as this issue may be specific to the PRO subscription or the Darwin 25.5.0 arm64 arm platform.
  • Monitor system resources and observe if the issue persists when running the app with minimal or no extensions and MCP servers.

Notes

The provided information does not include enough technical details to pinpoint the exact cause of the issue, and the image attached does not provide additional context.

Recommendation

Apply workaround: The best course of action would be to try and mitigate the issue by investigating the Codex Helper (Renderer) processes and potentially disabling or updating them, as upgrading to a fixed version is not explicitly implied in the issue.

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#file not found#serialization error#model compatibility#GPU setup#container setup

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codex - 💡(How to fix) Fix CPU usage problem [1 comments, 2 participants]