codex - 💡(How to fix) Fix Abnormal CPU usage on new conversation page [2 comments, 2 participants]

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openai/codex#19614Fetched 2026-04-26 05:13:52
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What version of the Codex App are you using (From “About Codex” dialog)?

26.422.3464.0

What subscription do you have?

Pro

What platform is your computer?

Microsoft Windows NT 10.0.26200.0

What issue are you seeing?

The codex app is using higher CPU resouce on the initial conversation page:

<img width="1649" height="645" alt="Image" src="https://github.com/user-attachments/assets/8837364a-3c70-413c-82ef-00ee07ddcf33" />

After switching to one of the conversation, the usage is normal:

<img width="1462" height="466" alt="Image" src="https://github.com/user-attachments/assets/801bd048-a3b2-4ba1-8d27-fab0c77cb8fa" />

Also, the action of clicking on one of the conversation is laggy.

What steps can reproduce the bug?

Just open codex on the initial empty conversation page.

What is the expected behavior?

The CPU usage should be lower.

Additional information

This is a 16 cores 32 threads machine. 3-4% of usage means codex using half a cpu core on this page.

extent analysis

TL;DR

The high CPU usage on the initial conversation page in the Codex App may be due to an optimization issue, and a potential fix could involve updating the app or adjusting its configuration.

Guidance

  • Verify if the issue persists across different conversation pages or if it's specific to the initial page.
  • Check for any resource-intensive processes or animations on the initial conversation page that could be causing the high CPU usage.
  • Consider testing the app on a different machine or with a different subscription plan to isolate the issue.
  • Look into potential configuration options or settings that could help optimize the app's performance on the initial conversation page.

Notes

The issue seems to be specific to the initial conversation page, and the high CPU usage drops to normal levels after switching to a different conversation. This suggests that the issue might be related to the page's content or layout.

Recommendation

Apply workaround: The user could try closing and reopening the app or switching to a different conversation page to see if the issue resolves itself, as the high CPU usage seems to be specific to the initial page.

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codex - 💡(How to fix) Fix Abnormal CPU usage on new conversation page [2 comments, 2 participants]