Preserve the transition
Use the same permitted video passage, browser window and display. Note the plugged-in result, then the battery result. Record whether the issue is uneven motion, buffering, reduced quality or a full page reload, since those observations point to different questions.
A useful hypothetical record might say steady audio with uneven picture after the browser’s energy-saving state changes. It should not say the internet slowed unless that was independently observed. Keep other heavy tasks and display changes out of the first comparison.
Name the setting before changing it
Edge Energy saver was formerly named Efficiency mode, and it is separate from Windows-wide power features. Inspect the actual browser page and selected level. Preserve the original choice before a short reversible comparison with the relevant supported setting.
Do not disable every power control at once. If the same passage improves after one change, record that exact relationship and restore the preferred configuration as appropriate. A battery-saving trade-off may be acceptable during travel even if a plugged-in session uses a different preference.
Keep the conclusion narrow
If there is no change, retain that outcome and investigate other relevant factors rather than repeatedly toggling the same option. If one site differs from another, record both named players with the same power context. Avoid extrapolating a short sample into a battery-life benchmark.
Send support Edge version, device, browser energy state, Windows power state and the observed media behaviour. Include whether the issue occurs only in the background or on the active tab. This evidence separates a browser setting from a vague report that all streaming fails whenever the charger is removed.