It seems my sites they are getting invalid clicks from Germany each day.
Contacted G and got this from rep
The decrease in CPCs you're experiencing is due to an increase in clicks with no increase in advertiser spend. The majority of these additional clicks are invalid and were likely caused by a third party process. These invalid clicks were filtered automatically by our system so your account remains in good standing and no action is required on your part.
I'm now trying to find out how and which ip from Germany to block. Sites have absolutely nothing to do with Germany.
Thought is was China but found in the Adsense CP you can view revenue from each country Germany it is. :(