I have a headache from searching for solution of my problem.

Everytime when I open Google Chrome and any YouTube video (doesn't matter if Flash or HTML5), system process named "NT Kernel & System" goes to costume about 17% of all my CPU performance.

It assumes to 100% of 1 core of all 8 cores.

enter image description here

When I close the YouTube tab, the process immediatelly drops to 0~2% which seems to be OK.

PC specs:

  • ASUS R500V
  • Intel Core i7-3610QM @ 2.30 GHz
  • 8 GB RAM


  • Windows 7 SP1 Home Premium 64-bit
  • Google Chrome 40.0.2214.91 m 64-bit

And in the last stats from Chrome task manager:

enter image description here

  • capture a xperf trace of the high CPU usaage (30 - 60s): pastebin.com/4h2ySm1V and share it. I'll take a look at it and try to tell you what is wrong. – magicandre1981 Jan 25 '15 at 8:05
  • Thanks for instructions, here is the file: mega.co.nz/… I'm not sure if I did it right but hope so. Please let me know.. Thanks. – Martin Jan 26 '15 at 12:15
  • the trace is corrupted. Set the value after -buffersize to 4096 and capture a new trace. – magicandre1981 Jan 26 '15 at 16:14
  • Ok next try: mega.co.nz/… – Martin Jan 26 '15 at 17:10
  • the trace is too short (only 8seconds). HEre the system uses 1.8% and this is fine. Capture a new one which shows the high usage and also close the YT tab to show the drop in CPU usage – magicandre1981 Jan 27 '15 at 5:47

I think I solved it.

I unchecked "use hardware acceleration when available". Now it's everything faster and consumes lower CPU.

enter image description here

  • 1
    report this issue in the Chrome Bugtracker, so that the Chrome Team can fix it. – magicandre1981 Jan 31 '15 at 15:36
  • I can confirm the fix as well. – FailedDev Jun 9 '15 at 8:12

Had same problem with Win7 Pro.
I uninstalled Intel® Rapid Storage Technology drivers and the problem was solved.

Your Answer

By clicking "Post Your Answer", you acknowledge that you have read our updated terms of service, privacy policy and cookie policy, and that your continued use of the website is subject to these policies.

Not the answer you're looking for? Browse other questions tagged or ask your own question.