Another one I currently have running has a frequency of 5.2 already. It's been running only 2 hours. Potential audience of 9,000 people.
Likewise the click through rates have bottomed out. Even failed campaigns in the past would produce 2% CTR, today I have some that are less than .5%. In fact, one is an ad that had a 6% CTR rate earlier this week, I paused it and re-launched today and the CTR is less than 0.75%. I have sold 17 shirts on this campaign today, so it's not like it is a dud.
I have tried CPM, CPC, OCPM and all of them have been producing similar results in the past several days.