Codex GPT 5.5, Extra high , 1.5 X speed is struck in thinking and could do just 200 lines of simple code

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

Codex 26.519.41501

What subscription do you have?

Pro

What platform is your computer?

Microsoft Windows NT 10.0.26200.0 x64

What issue are you seeing?

Codex is too slow and struck in thinking for very long time.
It took 1hr 59 minutes for a session to complete just 217 lines of simple code and I had to stop as it was tooooo long.
In another session it took 2hrs 16 mins to write 618 lines of code. I had to ask after 1 hr 30 mins ; if it was struck and it responded to it after 30 minutes just before stop; I mean this is not how codex was working; now using 5.4 Xtra high and it works quite well; if not like before.

What steps can reproduce the bug?

Looks like it is recent as I am seeing many people reporting it.

What is the expected behavior?

_No response_

Additional information

_No response_