{
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  "path": "/t/codex-becomes-extremely-slow-and-causes-severe-ui-lag-when-working-with-many-files/1376629#post_5",
  "publishedAt": "2026-03-13T13:14:19.000Z",
  "site": "https://community.openai.com",
  "textContent": "No, all of this comes from the Codex application itself. It is most likely related to Electron, so the layout and rendering within Electron may not be well optimized.\n\nTo be honest, I would suggest switching the Windows version of Codex to WinUI instead. That would significantly improve performance compared to using an HTML-based interface.\n\nThe lag is particularly noticeable when creating a new thread, where the application may freeze for approximately 3–8 seconds.",
  "title": "Codex becomes extremely slow and causes severe UI lag when working with many files"
}