According to 9to5 Google, the browser's developers are creating a tool to make browsing much faster by stopping heavily-rammed adverts from slowing everything down.
Google has published a guide explaining the tool and giving a definition on 'heavy'.
The wrote in a blog post: "An advertisement is considered heavy if it has not been clicked on by the user and meets any of the following criteria:
Used the main thread for more than 60 seconds total
Used the main thread for more than 15 seconds in any 30 second window (50% utilization over 30 seconds)
Used more than 4 megabytes of network bandwidth to load resources (sic)"