BlockBeats news, Google's Chrome browser, said in a blog post on May 14 that it had recently found that less than 1% of ads were consuming more resources than users were using without their knowledge, such as excessive battery power and web data. These ads (such as those for cryptocurrency mining, poorly programmed, or not optimized for network use) can drain battery life, saturate already strained networks, and come at a cost.
To save users' batteries and data plans, and to provide a good web experience for users, Chrome will limit the resources that display ads can use before users interact with them. When an AD reaches its limit, the advertising framework naviges to an error page, notifying the user that the AD is using too many resources.
Chrome sets the threshold for web data to 4MB or 15 seconds of CPU usage in any 30 seconds, or 60 seconds of total CPU usage. While only 0.3% of ads currently exceed this threshold, they account for 27% of the network data used by ads and 28% of all AD CPU usage.

Chrome plans to experiment with this over the next few months and roll out the intervention on Chrome stable around the end of August.
The original address: https://blog.chromium.org/2020/05/resource-heavy-ads-in-chrome.html? M = 1
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