Are Google Ads being updated?

Is there the same question, are google ads being updated, the proportion of preheating ads is good, the proportion of second ads has suddenly dropped from the day before yesterday, whether it is video ads or search.

I still live with a very high preheat ad rate and it works flawlessly, as soon as I run the second ad, the suspicious payout changes suddenly from the day before yesterday. I want to confirm everyone's status.