Memory Saver is a feature that deactivates unused tabs to free up memory on a user's device. There is an existing policy, HighEfficiencyModeEnabled, which allows administrators to control the Memory Saver feature. A new policy called MemorySaverModeSavings allows you to configure how aggressive the Memory Saver is when deciding to deactivate tabs. Choose the conservative option to deactivate fewer tabs or the aggressive one to get the most memory savings.