Massive lag and stuttering on new Windows ChatGPT app
Open 💬 3 comments Opened Jul 10, 2026 by aerethiel
💡 Likely answer: A maintainer (github-actions[bot], contributor)
responded on this thread — see the highlighted reply below.
What version of the Codex App are you using (From “About Codex” dialog)?
26.707.31428
What subscription do you have?
ChatGPT Plus
What platform is your computer?
Windows 11 Pro 64 bits
What issue are you seeing?
When using the Windows ChatGPT app, there is massive stutter and lag. Even my mouse completely freeze when I click in app. I have an i7-11800Hz working at 4.3 Ghz on 16 cores, this should not happen. No similar issues in ChatGPT Classic whasoever.
What steps can reproduce the bug?
Feedback ID: no-active-thread-019f4c71-cb7b-7de3-8bc1-d68acb5bb8f3
What is the expected behavior?
_No response_
Additional information
_No response_
3 Comments
Potential duplicates detected. Please review them and close your issue if it is a duplicate.
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It is actually not a duplicate because the issue is not just CPU usage of sluggyness, it is actually stutter rendering the mouse unusable for a few seconds each time I'm clicking. I didn't have this issue with previous Codex, nor Classic GPT.
Likely a duplicate of https://github.com/openai/codex/issues/20214, please comment there with your symptoms and any triggers