Codex app is laggy and unresponsive with long chat threads on Windows 11
Open 💬 4 comments Opened May 6, 2026 by bvqbao
What version of the Codex App are you using (From “About Codex” dialog)?
26.429.61741
What subscription do you have?
Pro 5x
What platform is your computer?
Windows 11 x64
What issue are you seeing?
In a long chat thread, every time I enter a new message, the app becomes unresponsive for like 5s. After that it's still quite laggy. These problems didn't happen in some previous versions of Codex app with longer chat threads.
What steps can reproduce the bug?
In a long chat thread, post a new message.
What is the expected behavior?
The app should be responsive with long chat threads.
Additional information
_No response_
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