codex - 💡(How to fix) Fix Codex App frequently freezes/stutters on Windows 11 Pro despite sufficient system resources [2 comments, 2 participants]

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

Latest Codex App downloaded from the Microsoft Store.

What subscription do you have?

Plus

What platform is your computer?

Windows 11 Pro, x64 CPU: AMD Ryzen 5 5600 RAM: 32 GB

What issue are you seeing?

I frequently experience Codex App freezes, stutters, or severe UI lag on Windows 11 Pro.

This happens during normal usage, especially when:

running prompts; opening existing/new chat sessions; switching into a conversation that has previous context.

The app may become temporarily unresponsive or noticeably slow. This is not a full system freeze — the rest of Windows remains responsive.

I checked Windows Task Manager while this happens, and system memory is not close to being fully used. My machine has 32 GB RAM and a Ryzen 5 5600 CPU, so this does not appear to be caused by insufficient hardware resources.

Because this is a local desktop app running on a fairly capable machine, I would not expect frequent UI freezes during basic prompt execution or when opening chat records. This seems more likely to be a Codex App performance or optimization issue on Windows.

What steps can reproduce the bug?

Open the Codex App on Windows 11 Pro. Open an existing chat session, especially one with previous context. Run a prompt or continue the conversation. Alternatively, open a new chat record/session. The Codex App frequently becomes slow, freezes briefly, or shows heavy UI lag.

This does not happen every single time, but it happens often enough to interrupt normal development work.

What is the expected behavior?

The Codex App should remain responsive while opening chats, running prompts, and switching between sessions.

Even if a prompt is being processed or the context window is large, the UI should not frequently freeze or become heavily laggy on a Windows 11 Pro machine with 32 GB RAM and a Ryzen 5 5600 CPU.

Additional information

This issue occurs even when Windows Task Manager shows that RAM is not fully used. Other applications remain responsive, so the bottleneck appears to be inside the Codex App rather than the whole system. I am using the latest Codex App version available from the Microsoft Store. My hardware should be more than sufficient for normal local app usage, so I believe this may be a Windows performance/optimization issue in the Codex App.