Surface pro 4 - clock speed of CPU keeps the same

Anonymous
2016-08-03T03:19:10+00:00

After updating to windows 10 (1607), I find that the clock speed of the CPU keeps to be 2.92GHz when plugged, and to be 2.47GHz when using battery. My surface pro 4 has a core i5 CPU. It seems strange because the clock speed of CPU should change with the workload in the Task Manager. Does anyone have the same problem?

Surface | Surface Pro | Display and screen

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Anonymous
2016-08-31T01:11:30+00:00

Fixed with today's update. Thanks, MS!

NOTE: I had to reboot twice after updating. So if anyone is not seeing the fix try a restart.

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  1. Anonymous
    2016-09-16T20:28:58+00:00

    This should not be mark answered. The only thing that fixed this problem for me was going to the Fast Ring.

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  2. Anonymous
    2016-09-13T09:54:42+00:00

    After the Update SP4 go to Suspended after 30 min

    But I use 180 min as default

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  3. Anonymous
    2016-09-06T12:21:06+00:00

    I have no explanation for the behavior described above. Can you post your settings?

    CMD > powercfg /q

    The relevant part should be under "Subgroup GUID: 54533251-82be-4824-96c1-47b60b740d00  (Processor power management)"

    The August 30 update changed Speed Shift defaults to:

    Processor energy performance preference policy (MSR 0x774) Processor performance boost mode
    AC 33 (0x54) Aggressive
    DC 50 (0x7F) Aggressive
    Battery saver 70 (0xB2) Disabled

    Summing up, Microsoft enabled turbo on battery again, but battery saver still disables it. Additionally battery saver tries to schedule everything on core 0 in order to keep core 1 power gated at C7.

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  4. Anonymous
    2016-09-06T08:12:44+00:00

    After the update my SP4 is very very very slow!

    in idle it runs @ 0,49 mhz while connected to power adapter! 

    while typing this post, is 0,6mhz and there is a 0,5 seconds lag between characters!

    ****?

    After adding to the registry this:

    Windows Registry Editor Version 5.00

    [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Power\PowerSettings\54533251-82be-4824-96c1-47b60b740d00\8baa4a8a-14c6-4451-8e8b-14bdbd197537]

    "Attributes"=dword:00000002

    [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Power\PowerSettings\54533251-82be-4824-96c1-47b60b740d00\36687f9e-e3a5-4dbf-b1dc-15eb381c6863]

    "Attributes"=dword:00000002

    [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Power\PowerSettings\54533251-82be-4824-96c1-47b60b740d00\cfeda3d0-7697-4566-a922-a9086cd49dfa]

    "Attributes"=dword:00000002

    now the system become reactive, even if these should only enable advanced options to the power management panel...

    is my sp4 sensitive?

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