According to Google, when this feature is enabled, it not only limits the usage of data, but also less usage of the battery as well as lowered demand of mobile’s CPU.
“Google Meet automatically adjusts to your device, network and set-up to provide the best possible meeting experience. However, you may want to adjust the quality of your meeting to reduce impact on your mobile device,” said the company in a blogpost.
This is what you need to do to enable data saver mode on your Google Meet
Go to Settings
Turn on Limit data usage.
There is no admin control required for this feature and it will be visible to all users of Essentials, Business Starter, Business Standard, Business Plus, Frontline, Enterprise Standard, Enterprise Plus, Education Fundamentals, Education Plus, Nonprofits, Cloud Identity Free, Cloud Identity Premium. The feature will also be available to all Google Workspace customers, as well as G Suite Basic and Business customers.