[Solved] Win10 users - please check your Task Manager CPU performance with no apps running

I was doing some test earlier and measuring the Task Manager CPU reading :
 
http://forum.cakewalk.com/Test-i7-2600K-vs-i7-6700K-HDD-none-Raid-vs-SSD-Raid-0-m3439971.aspx
 
However, in a few other tests that I've not posted the result yet, I was loading the 6700K CPU to over 50% (with 100 tracks running 2 Pro Channel per track). After this test, to my horror.. the CPU would just stay at 15% load without ever coming down to 0, even though with no other application running. I was thinking it may be a memory bug or something.. I rebooted the system, same result, CPU loading at 15% @ 3.xx Ghz. I run Sonar with no project loaded - same 15% load @ 3.xx Ghz - if i refer back to my test - the initial track run was registering only a few % CPU, with variable speed.
 
Now, it would just stay at 15% load. A few background services added to this load, with the "System and compressed memory" leading the way.
 
Searching on this issue "System and compressed memory" pops up a few topic regarding disabling "fast start" - a Windows 10 feature to save an image at shut down, so your next startup is faster. I tried all sort of setting following this path with no help - CPU load still at 15%.
 
I re-installed Windows 10 - same result.
 
I'm wondering if it's my SSD being overworked - as the Task Manager also shows 100% 'active' on the boot disk from time to time. I'm letting the system shut off till tomorrow and see.. 
 
Meanwhile, I would appreciate if you can check your Task Manager CPU load with no apps running - especially if you're using SSD too.
 
Note : My other 2600K system's CPU load is still at a nice 0% (occasionally going 1%) when no other apps running - and I've not (don't dare to) run the 100 Tracks with 2 PC per track test on this system!!
 
Thanks!

Hmm, interesting, but thanks.