How long before you are seeing for PMax optimization period? (New-ish account here ~100 conversions). I've heard some recommend killing campaigns in as quick as 7 days with no conversions, but others say theirs turned profitable after as long as 12 weeks.
@Austin LeClear Great info! Thank you! A quick follow up: I've also been told that making changes in the account can throw-off the learning process. Would you advise avoiding changes in the account during that time (I mean ZERO changes - no budget increases, no asset changes, etc.)? If its ok to make some changes during that period, which ones would you say are ok vs which to avoid? I know as a general rule increasing campaign budgets by more than 10-20% can trigger it. I'm into my third week of a new PMax and I'm trying to decide how hands-off I should be to let Google do its thing.