Codex.app using 100%!! of gpu on an mbp m5 merely to render the app

Open 💬 5 comments Opened May 8, 2026 by bn-l

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

Version 26.506.21252 (2575)

What subscription do you have?

Pro

What platform is your computer?

arwin 25.4.0 arm64 arm

What issue are you seeing?

<img width="865" height="103" alt="Image" src="https://github.com/user-attachments/assets/67b04823-1d64-48ff-95b3-b5699ba6a3ae" />

This is literally the only app on my machine that causes it to throttle. Lmstudio running models that barely fit into my available ram and utilizing mlx? No. Windows games running on wine? No.

Rendering a simple forms based DESKTOP APPLICATION?? Yes!

What steps can reproduce the bug?

  1. Open the application.
  2. Turn on the AC as the room you're using it in begins to heat up
  3. Double check that you bought applecare+ incase apple's engineers could not foresee these kind of thermals

What is the expected behavior?

_No response_

Additional information

_No response_

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