If scripts are disabled AMP uses <noscript> to skip the 8s timeout, and renders quickly. The OP is getting slow loads because they're (a) silently blocking the

If scripts are disabled AMP uses <noscript> to skip the 8s timeout, and renders quickly. The OP is getting slow loads because they're (a) silently blocking the AMP JS and (b) not running the <noscript> section. (Disclosure: I work on AMP ads on non-AMP pages, which I like because it means the ads are declarative)