Well, its been a really painful association with eBay and CJ since their upgrade. My earnings are down by 80%. This has nothing to do with speed or visitors closing the window before the page downloads. I have tested eBay ads on a number of high speed as well as slow connections and slow pages have rarely been an issue.
The truth is that CJ's tracking is completely screwed up. They continue to try and fix it or they dont care about fixing it. Or else they would have their earlier software back in place. Apparently, there seems to be a communication gap between CJ and eBay. I wrote to eBay informing them about this lousy tracking and they were completely surprised. They said they would look into the matter with CJ and I have received no replies from eBay since then.
I simply fail to understand how CJ can afford to lose so much money. Worse, there are a few or no options out there. So until then, its just checking the stats every morning and puling your hair out at this huge gap between clicks and leads/sales.