To improve memory and CPU usage on the Edge, Microsoft is developing a new feature called "Sleeping Tabs."
Unlike discarded tabs where your page is fully reloaded, a sleeping tab continues to work with all content of when you click.
According to Microsoft, sleeping tabs could improve memory usage by up to 26% for Microsoft Edge. Similarly, a sleeping tab also reduces its use CPU up to 29%, which will result in its savings battery.
When you hover your mouse over a tab in sleep mode, Edge will declare "This tab is suspended to save resources".
Activation of the experimental Sleeping Tabs function
1. Open Edge: // flags
2. Enable “Enable Sleeping Tabs” and “Sleeping Tabs use observed site characteristics heuristics”
3. Restart the Edge.
4. Open Settings> System.
5. See the Sleeping Tabs setting enabled.
By default, Microsoft intends to set tabs to fall asleep after two hours inaction, but advance users can choose a different time period, as shown in the screenshot below:
To continue using a frozen tab, just click on it and your content will be restored without full loading of the page.
You can also add important sites that you never want to freeze by putting them on a block list in Settings.