We want to serve ads on our site but the adserver we are in talks with has issues with delivering their advertising fast enough for us.
The issue as I see it is that we
You may be interesed in the Javascript library I developed which allows to load 3rd party scripts using document.write after window.onload. Internally, the library overrides document.write, appending DOM elements dynamically, running any included scripts which may use document.write as well.
I have set up a demo, in which I load 3 Google Ads, an Amazon widget as well as Google Analytics dynamically.