codex - 💡(How to fix) Fix GPT-5.5 performance and reliability seem significantly worse today

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Root Cause

Over the past two days, this noticeably degraded Codex behavior has also caused repeated failed bug-fix attempts followed by rollbacks, wasting a large amount of my usage. My $200 Pro plan quota has already consumed around 60% of the weekly limit in just these two days because of these unsuccessful cycles.

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Today, GPT-5.5 has felt significantly worse than usual in Codex.

It went through multiple rounds of conversation but still failed to fix a bug. Even worse, some of the attempted changes ended up breaking parts of my project that were previously working.

Over the past two days, this noticeably degraded Codex behavior has also caused repeated failed bug-fix attempts followed by rollbacks, wasting a large amount of my usage. My $200 Pro plan quota has already consumed around 60% of the weekly limit in just these two days because of these unsuccessful cycles.

This does not feel like normal model behavior compared with previous sessions. The debugging quality, consistency, and ability to preserve existing functionality all seem noticeably degraded today.

Is anyone else seeing the same issue with GPT-5.5/Codex today?

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