New "ChatGPT" app: agents are very slow

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

26.707.31428

What subscription do you have?

Pro

What platform is your computer?

Microsoft Windows NT 10.0.26200.0 x64

What issue are you seeing?

Agents in new app are very slow. A task that I would estimate would normally take 20-30 minutes is taking ~2 hours. The behavior is the same with GPT 5.5, so I would not chop this up to a new model issue.

What steps can reproduce the bug?

Update to new version, try to use an agent.

What is the expected behavior?

I would like the ability to roll the app back to the previous version. Are the installers located anywhere where we can download them? I looked through the release assets here, but there are 164 of them, and not really sure which one it would be. The one I did try was the cli tool.

Additional information

_No response_