Comment by tengkahwee

Unfortunately ad technology and creative companies are not using the VPAID standard properly. Essentially VPAID is simply a JS file. One really bad VPAID I seen is generated through Adobe Animate CC and meshed with a bunch of custom code with jQuery in it. The image assets are all oversized because Samsung Galaxy S6 edge supports 2560 x 1440 and it wasn't resized to fit desktop proportions. The VPAID standard doesn't constrain the designer in terms of payload and how many connections to send.