GPT 5.5 Codex Quota Drains Quickly

5.3 Codex was the best model I’ve worked with. But now, even if I switch back to 5.3 Codex, it is not doing anything correctly. 5.5 consumes quota so fast with failure, 5.3 Codex consumes less quota with more failure. Changing model back to 5.3 Codex just causes more repetition for the same task with no result on my side.