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Edge uses 100% CPU on macos

WCR 200 Reputation points
2026-01-22T07:38:18.23+00:00

On M4 16 500 and only 20 tabs I get 100% CPU usage. Build 144.0.3719.82

Microsoft Edge | Browser crashes or stops working | MacOS
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  1. Thomasx 10 Reputation points
    2026-02-07T13:03:50.8+00:00

    Version 144.0.3719.115: February 5, 2026 fixed the issue.

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  2. J Muzhen 40 Reputation points
    2026-02-07T03:26:20.26+00:00

    from the changelog:

    Version 144.0.3719.115: February 5, 2026

    • Fixed a macOS issue that caused Microsoft Edge to fully saturate one CPU core under certain conditions.

    so maybe this is fixed.

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  4. Michael Kunde 0 Reputation points
    2026-01-23T09:24:11.1966667+00:00

    Same problem here with mac book pro m2 pro, 32 GB RAM

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  5. Q&A Assist
    2026-01-22T07:38:31.11+00:00
    AI generated content. This question contains an answer created with AI from Q&A Assist. Learn more

    High CPU usage in Microsoft Edge on macOS can be caused by several factors, including the number of open tabs, the content being rendered, and the overall performance of the Mac. Here are some suggestions to help mitigate the issue:

    1. Optimize Tabs: If you have many tabs open, consider closing those that are not in use. Each tab consumes resources, and heavy websites can significantly increase CPU usage.
    2. Check for Extensions: Extensions can sometimes cause performance issues. Try disabling them to see if that reduces CPU usage.
    3. Update Edge: Ensure that you are using the latest version of Microsoft Edge, as updates often include performance improvements and bug fixes.
    4. Hardware Acceleration: Make sure that hardware acceleration is enabled in Edge settings, as this can help improve performance by offloading tasks to the GPU.
    5. Clear Cache: Regularly clearing your browser cache can help improve performance, especially if it has become bloated over time.
    6. Monitor Resource Usage: Use Activity Monitor on macOS to check which processes are consuming the most CPU and memory, which can help identify specific issues.

    If the problem persists, consider reaching out to Microsoft support for further assistance, as they may have more specific troubleshooting steps for your situation.


    References:

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