Are the ads injected in real-time or at the start of the video?

I assume it uses extra processing power to add them randomly for each user individually so if it was the latter would rapidly refreshing the page over and over again force them to completely rerun the process over again and slow their servers down? I guess I’m not entirely sure how this would work.

Doctors HATE this one simple trick! Lose up to 100% of MyChart data - and KEEP it off!

Can help reduce blood pressure, high cholesterol, weight, height, gender, name and more to NULL! Wake up feeling NULL and NULL!