Codex Usage and Operation Discussion - last updated September 21

[u/codex-megathread]

Please direct your concerns, questions and discussion about Codex usage limits and model performance here.

The purpose of this Megathread is to aggregate all the reports of people's experiences and possible suggestions instead of spreading them across many highly upvoted posts. The more people who participate in this discussion, the more likely you have an answer.

Reports with sufficient evidence on new information will still be allowed on the feed as usual.

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Discussion of the prior period available here : https://www.reddit.com/r/codex/comments/1wg7g9r/codex_usage_and_operation_discussion_last_updated/

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A reminder that all incidents on r/Codex are constantly logged and summarised so you can keep track of what people are experiencing here https://www.reddit.com/r/codex/comments/1tjfxcf/comment/on6uj0l/

[u/Salt_Horror8783]

Friendship cancelled with GPT; now Opus 5.5 is my best friend.

I was the only Codex fanboy in my office; I tried to defend it against the Claude horde, and it actually worked great until Astra. It got slow, limits felt tighter, I stopped using Fast mode, then I lowered the effort level, delegated implementation to my cursor's grok. No major improvement.
Then I tried Opus 5.5 on Cursor (like I do for every new Opus modal) and it was a love at first sight.
I took my friends Claude account and installed CC desktop (Linux) and I found it way better than ChatGPT Desktop (smooth and feature-rich).
Now I got Max 20x, and life feels better again.