Surface Pro 6 Runs Slower in Dock

Anonymous
2019-04-09T02:47:14+00:00

My Surface Pro 6 runs noticeably slower when it is connected to the dock. I have a dock at both home and work and see the same reduced performance in both places. This is not a new issue (unlikely related to a recent Win or other software update). Both docks were originally purchased for use with my previous Surface Pro 4 device.

Does anyone else notice such a pattern?

Any thoughts on what might be causing this and how to fix it?

  • Surface Pro 6, i7, 16gb
  • Win 10 10.0.17763 Build 17763
  • >300GB of 500GB hard drive are free

I don't see any obvious issues when looking at Task Manager. CPU, memory and internet are all lightly utilized.

Thanks much for any thoughts.

-bs

Surface | Surface Pro | Power and battery

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  1. Anonymous
    2019-08-19T10:31:35+00:00

    I can confirm that this problem is related to 0,4 GHz CPU throttle.

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  3. Anonymous
    2019-08-20T16:21:34+00:00

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  4. Anonymous
    2019-08-20T16:26:26+00:00

    I mean, that in some unclear circumstances, the CPU speed on Surface Book 2 / Surface Pro 6 goes down to 0,4 GHz and it stays there. You can check it by pressing ctrl+alt+del and see the CPU performance table. In normal use, CPU speed should be around 3,0 GHz.

    There are a lot of details on the Internet already about this issue.

    https://www.techrepublic.com/article/microsoft-surface-pro-6-and-surface-book-2-devices-are-throttle-locking-to-400-mhz

    https://www.notebookcheck.net/2018-Surface-Pro-6-series-still-suffers-from-steep-CPU-throttling.354206.0.html

    https://www.reddit.com/r/Surface/comments/aj2go1/throttling_to_04_ghz_huge_issue

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  5. Anonymous
    2019-08-20T17:54:30+00:00

    I can confirm this is also the issue for me. I was using the Surface Dock, but today I switched to a generic dock that connects via USB 3, and encountered the same issue again. I disconnected the SP6 from power and CPU instantly returns to normal speed. Re-connect power and it slows down to 0.4 GHz. Hopefully a FW update becomes available soon. 

    I also came across this 'ThottleStop' software that looks like it will allow you to manually set the BD PROCHOT flag, which may be another workaround. I haven't tried this software yet though.

    https://beebom.com/how-use-throttlestop-control-cpu/

    Thanks.

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