In my experience, manual bidding is worst than optimized CPM.
This is also happened to me, everyday my CPM is change.. congrats for your CTR. it's high.
I'm still tweaking my ads for now, my CTR is below 1%. Any tips?
Zuckerberg can't figure out how to monetize mobile so he is artificially increasing "competition" on the desktop ads to make sure revenue increases month to month. This is the type of shit that happens when a company goes public.
