Yeah, it's definitely not the CPM bid...I've tried several different intervals. Again, the clicks are there, just the conversions are terrible.
I haven't fooled with Frequency Cap much, just tried 5 and 8. I've tried different login counts, but wasn't consistent enough to note anything honestly. I was trying to think of a way to target common weekday users during the weekend....I thought maybe increasing the login count much higher might do this.
Like guerilla said, time for something weekend specific.
What's different intervals? if you go up or down like $0.10 chances are you won't see much of an effect.. especially if you factor in guys who ONLY RUN ON WEEKENDS BECAUSE ITS SO GOOD.
I can't tell you how to run your business but I hope you're giving it an honest try before concluding otherwise.