[baybal2]

>To maximize their yield, they resend ad requests in a loop to multiple parties every few seconds until an ad clears, leading to this massive network load.

They are stalling for time in every allowed way to get more bids.

A standard tactic for company like theirs is to send duplicate lots for a single impression, and reload the ad few times per second once they get overriding bids even if one of lots was already sold.