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How to change CPU affinity FOREVER?

Anonymous
2022-09-11T06:01:18+00:00

I am useing 12 core CPU and i don't know why it only set to use core 0,1,2 when play games and that make my PC really lag sometime, take a month to find is CPU affinity problem, i change it to core0 to core7 but everytime i close and open the app it change back, I want to know Why it auto change the application to only use CPU core 0,1,2 and how change CPU affinity FOREVER?Thanks

Windows for home | Windows 10 | Devices and drivers

Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.

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  1. Anonymous
    2022-11-12T04:23:09+00:00

    Process Lasso from BitSum
    I have been struggling with this for ages. then a friend pointed me to this.
    how he found it, I have no idea.
    but process lasso is a very simple tool, that just works. I don't know why Microsoft hasn't allowed us to set affinity/priority on a permanent level, or why nobody seems to know [yet] about this tool, but I had to tell someone.
    I kept ending up on dead forums that didn't do what I needed, and I couldn't resurrect them or reply now that I found the tool, but here you go.
    I hope I help at least one future user!

    50+ people found this answer helpful.
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  2. Anonymous
    2022-09-12T06:15:00+00:00

    Hi waihong_63，

    Welcome to Microsoft Community.

    For a way to set CPU affinity for an application, I found two threads shared by a user in the community. There is information about changing the CPU affinity through the registry and shortcut parameters, which I think will help you.

    How to Permanently Set Priority & Affinity With Shortcut File

    How to Permanently Set Priority Processes Using Registry Editor

    In the case of an application that can only run with a small number of CPU cores, there is an upper limit on the number of cores that the application can support by default (this needs to be confirmed based on information provided by the application's developer), but it can still be forced to change through methods such as the registry.

    Disclaimer: Generally, modifying registry subkeys or work group is intended for advanced users, administrators, and IT Professionals. It can help fix some problems, however, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For further protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click here to view the article.

    Please feel free to let me know if you got any further updates, thanks.

    Best Regards,

    Manson - MSFT | Microsoft Community Support Specialist

    6 people found this answer helpful.
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  3. Anonymous
    2022-09-14T03:30:05+00:00

    Hi waihong_63，

    I would like to confirm whether there is any progress in your issue. Please let me know if there is any update.

    1 person found this answer helpful.
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