Edge eating all memory after wake from sleeep

zettt 5 Reputation points
2025-07-22T09:53:00.14+00:00

After waking my Mac from sleep, Edge tends to eat a lot of resources. It often just eats a ton of memory and uses all CPU. I had this on my M1 MacBook already, but now it also happens with my new M4 MacBook. I have no idea what causes this. Is this a known issue? Can somebody help me narrow down the cause of this? I don't know where to start searching. Could this be an extension-related issue as well? The screenshot is from today's wake-up, showing the Memory page of Activity Monitor.

I read on some other threads, that it could be related to auto-update not working, or some sort of energy management issues (on Windows). Do I have to have auto-update on, e.g. the background launch agents?

Thank you for any the help in advance.

Microsoft Edge | Browser crashes or stops working | MacOS
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  1. Chen1018 13,875 Reputation points Independent Advisor
    2025-07-22T11:01:42.77+00:00

    Hi there,

    I'm Cherrelyn, and I’m here to help

    Yes, this high memory and CPU usage in Microsoft Edge after waking your Mac from sleep has been reported by some users.

    Please try these suggestion:

    • Try launching Edge in InPrivate mode or with extensions disabled (edge://extensions) and observe behavior after sleep
    • Turn auto-update back on if it was disabled
    • Check Edge’s System settings > Performance, and toggle off “Continue running background extensions and apps when Microsoft Edge is closed”
    • Also try resetting Edge or creating a fresh profile to see if the issue persists

    I hope this will help and if you have any question please don't hesitate to reply to this thread.

    Warm regards,

    Cherrelyn

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  2. Chen1018 13,875 Reputation points Independent Advisor
    2025-07-23T01:36:06.32+00:00

    Hi Zettt,

    Thanks for your reply! You can find the “Continue running background extensions and apps when Microsoft Edge is closed” setting here just open Microsoft Edge click the three dots (⋯) in the upper-right corner and choose Settings go to System and performance. Under System, look for “Continue running background extensions and apps when Microsoft Edge is closed” toggle it off.

    This can help reduce high memory and CPU usage after your Mac wakes from sleep.

    Warm regards,

    Cherrelyn

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  3. Chen1018 13,875 Reputation points Independent Advisor
    2025-07-23T05:35:51.32+00:00

    Hi Zettt,

    Thanks for following up.

    Please check the screenshot I shared this shows exactly where you can find the setting.Edgesetting

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  4. Chen1018 13,875 Reputation points Independent Advisor
    2025-07-23T05:54:15.1033333+00:00

    Hi Zettt,

    After you click the setting then click the system and perfomance here the screenshotsystemperform

    after you click the system and performance you can see system then click it here's the screenshot

    system

    After click that you can see the “Continue running background extensions and apps when Microsoft Edge is closed” toggle it off here the screenshot.
    runnungback

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  5. Chen1018 13,875 Reputation points Independent Advisor
    2025-07-24T12:03:49.8433333+00:00

    Hi Zettt,

    I'm sorry for that and thank you for pointing that out.

    If using for Mac you're right there's no option to **"**Continue running background extensions and apps when Microsoft Edge is closed" is not available, as the system manages app behavior differently.

    Please try these suggestion instead:

    • Go to System Settings > General > Login Items and make sure Edge isn’t set to reopen automatically.
    • Also, in Edge, go to Settings > Start, home, and new tabs and check if any background behavior is enabled there like continuing where you left off.

    Warm regards,

    Cherrelyn

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