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.
Surface pro 4 - clock speed of CPU keeps the same
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Anonymous
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
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Anonymous
2016-09-02T20:12:28+00:00 rel0aded - Have you changed your power plans at all? From a Reddit post on the update not fixing the CPU:
"If you messed with your Power Plan before and CPU scaling does not work for you with the update after rebooting twice, try resetting your Power Plan to defaults. Credits: /u/-j-c-m- (Power Options->Change Plan Settings (Balanced)->Change Advanced->Restore plan defaults)"
source: https://www.reddit.com/r/Surface/comments/50eak2/new\_updates/
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Anonymous
2016-09-02T15:24:12+00:00 After the firmware update it was fixed for a time but after the recent windows cumulative updates the problem is back again. The cpu speed is stuck at max!
Should I delete the drivers and have re-install again??
UPDATE: So I deleted the drivers and restarted the device to have the drivers install again.
Unfortunately the cpu speed is still stuck at 2.19 Ghz on battery. I am suspecting that this issue has something to do when changing power states...
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Anonymous
2016-09-01T21:20:39+00:00 I must agree, my battery just lasted me 45 minutes and went down 35%. That means I'll get 1 hour and 30 minutes while using 70% of my battery. This is really REALLY bad... While I do love the Surface line, it does leave A LOT to be desired in terms of battery...
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Anonymous
2016-09-01T20:50:44+00:00 The latest update did not fix the problem for me. I also had to do the second reboot. Things were working temporarily, and I think that was before the second reboot, but after the CPU speed in Task Manager and fixed back at max and my battery is draining FAST.