Has anyone figured out how to make Firefox find this code & disable it before it engages? Those with high latency, DSL connections probably suffer much much longer delays. https://adprofs.co/beginners-guide-to-header-bidding/ SNIP Header bidding is an additional auction that takes place outside of the ad server, in the header of a web page, which loads before anything else on the page. The header typically contains metadata about the page and calls scripts used for formatting the style of the page, tracking, and so on. Because of this, it’s an ideal area to conduct a new auction. Even though this new auction happens in the visitor’s browser, the publisher essentially controls this auction. SNIP Managing Header Latency One challenge of header bidding is the latency added to page loading. The header auction process takes longer than a typical RTB auction on a single exchange, which generally times out at 100 milliseconds. However, since many publishers use multiple exchange partners in a traditional waterfall setup, such latency has always been there. It just hasn’t been in the header. Header bidding asks for multiple demand sources to put forth their best price, so several RTB auctions happen simultaneously. As a result, publishers need to manage their timeouts so that no one partner will hold up the header auction and jeopardize page loading. Ideally, the overall timeout should be kept below 500 milliseconds, or half a second.