Flags when a responsive search ad or a Performance Max asset group falls to Poor ad strength. Ad strength is Google's rating (Poor → Excellent) of how complete and varied your ad's headlines, descriptions and assets are; weak strength can throttle how often your ad shows at all.
Defaults & settings
Trigger when strength drops to - which levels count as a drop. Default Poor; an earlier warning at Average is available but off by default.
Checks daily; 7-day cooldown per ad.
Example. An RSA drops to Poor after several assets are disapproved out of it. The remaining ad is too thin for Google to assemble good combinations - the next daily check flags the drop within a day.