I just switched from cursor to codex and had the same impression. One chat with a few messages and most of my usage was gone, and i only used Luna. And it would work for tens of minutes on tasks that would've taken 10x less in cursor. Obviously anecdotal and i feel like the latest update to the ChatGPT app improved it, but maybe some codebases or setups lead to this behavior. Or we are in some kind of A/B test.