I trust you, your 95% of traffic are people who got out of the frame, but do you trust me if I tell you, if you disable it for a month, you'll come back here gob smacked at the % of your revenue hitting the roof and in the longer run, your CTR and eCPM will improve so will your revenue!
Note: I can't be held responsible on the other hand for your losses, this is only my own observation, experiment at your own risk!
But you don't get paid when they don't visit and click the ad (still inside the frame)!
This problem was highlighted since 2007 when it was released, and for the life of me I can't understand why *G does not discount or disregard their own IPs (hundreds of them), if a visitor from http//*G IP address/search OR http//*G IP address/translate_c or others such images etc, the ad shows but it is ignored. There are others and some even without IPs but with the proper *G domain name.
There are other implications in my view, *G says ads show but are ignored, they failed to say they record the impressions and clicks, though don't pay you a cent, they are nonetheless included in the overall CTR and eCPM and likely you get smart priced by mistake, theirs!
I'd love someone from the *G brigade to come here and tell me I am wrong, they might of course for the sake of not causing panic, but I bet if this has been fixed, there will be more legitimate revenue and true CTR and eCPM for publishers, hence less moaning and dissatisfaction...
Advertisers will also benefit, visitors coming to them referred by publishers for free will lead to some publishers banning those advertisers, they will see them as non converters. They may not know exactly who those advertisers are, but may just feel "if I ban some for while" and wait and see.
Now, for many people this is a trivial concern, for some like you, most of the traffic is from cache, images etc, if visitors do not get out of the frame, clicks and impressions are not counted, and many are not likely to get out of the frame. They looked at the image or read the page from cache, time to go back or click web or image results again.