Surface Book 2 throttles excessively, often down to 0.4 GHz

Anonymous
2018-05-30T14:41:18+00:00

I've recently purchased a 15" Surface Book 2.

When compiling large projects in Visual Studio 2017, I find that the processor often throttles excessively, often down to 0.4 GHz. As a result, compilation takes several times longer than it does on my 5 year old MacBook Pro. 

The Core Temp app shows that the CPU at this point is at 50-55 degrees Celcius or so.

The following question touched upon this problem, but the proposed solution did not work for me:

https://answers.microsoft.com/en-us/windows/forum/windows\_10-performance-winpc/cpu-clock-speed-sometimes-capped-at-04ghz/315d06ac-a40a-41f8-8314-b370f8b51618

Any ideas on how to fix this?

Thanks.

T

Surface | Surface Book | Power and battery

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  1. Anonymous
    2019-04-28T10:28:43+00:00

    I fixed the problem! I read this thread and follow the suggestion to uninstall the antivirus free software Avastar. No fan throttles any more! Million appreciate!

    Right now I am using Kaspersky. It do not cause throttling while I was playing the Assassin Creed Unity on my SB2 15”. And the chinese Kaspersky version for 3 years license is only 20 bucks......Actually the Windows Defender itself is good enough. It is not always necessary to install a third party antivirus. I need it just in case to watch some porn sites.........

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  2. Anonymous
    2019-04-24T21:04:29+00:00

    Did Zhan's solution work for you?

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  3. Anonymous
    2019-04-24T20:59:55+00:00

    The second solution being renaming the file? to say Throttling.old?

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  4. Anonymous
    2019-04-23T23:06:20+00:00

    I don't have the same issue as you. If you hit the 0.4ghz issue set your power settings to mid or high or low. It doesn't matter. I resets a ambient temperature switch.

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  5. Anonymous
    2019-04-23T20:57:40+00:00

    Hi,

    This has been happening to me mid workstream and driving me up the wall. This is normally within my AC controlled office so no issue with temps. I'm using a SP6.

    Iv managed to confirm that this only seems to happen when I am using one of the older power bricks in a clients office. Whenever I connect the power supply the CPU immediately locks to 0.4ghz. The CPU in all of my power profiles are set to 100% for either battery or connected to power

    as soon as I unplug it the CPU shoots back up to normal. When I use the power brick that came with my SP6 and or a surface dock there is no issue.

    Iv gone through the support process with MS and they just keep asking me wipe and reimage my machine. I am very loathe to do this as this is my work machine and will take the whole day or two to get my software back on and sharepoint/dropbox all resynced.

    I'm trying to keep it going until hopefully a fix comes out.

    Regards

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