How can I troubleshoot high memory usage in Microsoft Edge when working with many tabs?

Use Edge’s built-in diagnostics first, then enable the performance features that reduce memory pressure without closing everything.

1. Identify the tab, extension, or process using the most memory
   • In Microsoft Edge, press Shift+Esc to open Browser Task Manager.
   • Sort by Memory.
   • This shows which tab, extension, subframe, or utility process is consuming the most resources.
   • If one item is clearly abnormal, select it and choose End process.
   • After ending it, check whether Edge becomes responsive again.
2. Check extensions separately
   • Go to edge://extensions/.
   • Turn off all extensions temporarily and observe memory usage.
   • If memory usage improves, turn extensions back on one at a time to find the extension causing the issue.
3. Turn on sleeping tabs
   • Go to edge://settings/system/managePerformance.
   • Turn on Save resources with sleeping tabs.
   • Set an inactivity timeout that fits the workflow.
   • Add important sites to the exception list if they must stay active.
   • This is the main built-in feature for keeping many tabs open while reducing memory use.
4. Use the Performance hub to manage problem tabs
   • In Edge, go to Settings and more > More tools > Performance.
   • The performance detector can show when background tabs are using high CPU or memory.
   • From there, individual tabs can be put to sleep or closed instead of closing the whole session.
   • When no issue is detected, the Tabs performance status shows Healthy.
5. Turn off background activity after closing windows
   • Go to edge://settings/system.
   • Turn off Continue running background extensions and apps when Microsoft Edge is closed.
   • This helps if Edge keeps using resources even after browser windows are closed.
6. Verify hardware acceleration
   • Go to edge://gpu.
   • Check Graphics Feature Status and confirm hardware acceleration is being used.
   • If rendering is software-only, update the GPU driver and make sure Use graphics acceleration when available is enabled in edge://settings/system.
   • Software rendering can increase CPU usage and contribute to sluggishness.
7. Reset Edge settings if the issue persists
   • Go to edge://settings/reset.
   • Select Restore settings to their default values.
   • This preserves bookmarks, history, and saved passwords, but resets pinned tabs, startup page, search engine, and extensions.
   • This is more disruptive, so use it only after the earlier steps.

For a workflow with many tabs open, the recommended approach is:

• Use Browser Task Manager to find the exact tab or extension consuming memory.
• Enable sleeping tabs so inactive tabs stay available but use fewer resources.
• Use the Performance hub to sleep only the tabs that are causing pressure.
• Isolate extensions if memory growth continues over time.

If the problem is tied to a specific webpage or web app, Edge DevTools can help investigate memory leaks, memory bloat, or frequent garbage collection by using the Memory tool and the Performance tool’s Memory checkbox.

If more help is needed, collect:

• Edge version from edge://settings/help
• Browser Task Manager screenshots sorted by CPU and Memory
• The edge://discards output

References:

• Fix high CPU or memory usage in Microsoft Edge
• Learn about performance features in Microsoft Edge
• Fix memory problems