Why is token usage in Codex increasing so quickly now?

GPT-5.6 drains so much tokens. I tried to change UI on some pages about layout, refresh UI a bit by using GPT-5.6 Sol extra high. I was surprised when the model did very detailed. And also got surprised when it hit the 5h quota limit after running over 2 hours. So in my opinion it should be increase more the 5h quota limit. I’m in $100 plan, it is not the most expensive plan, but it can only do one task per 5 hours even not using maximum effort. You guys can see too much agents spawn just for review.