I suggest you to remove the scheduled task of "System and compressed memory" to check the behavior in your system (it is not a workaround but you can try it out).
Here the instructions on how to disable this:
Start->Control Panel->Administrative Tools->Task Scheduler Task Scheduler Library->Microsoft->Windows->MemoryDiagnostic> right click and disable both tasks.
Also you can try to do a clean boot on Windows*; see the following article on how to do this: https://support.microsoft.com/en-us/kb/929135
Please let me know if it helps you.
I have the same problem. After insert a SD card, 1 of CPU threads keep running at 100%, while the others almost 0%. Eject the SD card will not help, the problem will last until reboot.
Tested normal SDHC card and UHS-I card, in Windows7 x64 and Ubuntu 16.04, all have problems.
NUC6i5SYK ("blue dot" version) with BIOS v44.
JohnTse, let’s update this, and let me know if it helps you.
Intel® Management Engine Consumer Driver for Intel® NUC
Intel® Chipset Device Software for Intel® NUC
M4ntic0r, were you able to solve this?
I already have all the latest drivers installed.
And there are some relative discussions:
Found another symptom:
If I insert SD card before booting OS, things are all normal.
Even after unmount the SD from OS, CPU keep idle.
But once pull the SD out of the slot, one CPU thread go full load.
Could you please run Intel® System Support Utility and attach the result?
Did you try the steps I suggest to M4ntic0r?
When this happens, does your processor get stable, or it is always working 100%?
Thanks also for the feedback on this.
I just gave up the internal card reader, and wait for a BIOS update.
My machine is RMAed, I found the first one has the same problem.
I believe you can reproduce this problem by booting to a Ubuntu 16.04 desktop 64-bit live CD. Open the 'System Monitor' to see the CPU running percentage, then insert a SD card.
After this problem happens, every thing are working well including the SD card itself. But the NUC will turn hotter, and consume about more 8 watts power.
Thanks for the feedback, it is important to mention that at the beginning it’s normal that the performance of the processor increases; also bear in mind that the SD card reader is not supported in Microsoft* Windows* 7
Technical Support Specification Intel® NUC6i3SYB