High CPU usage of "NT Kernel & System" process while Chrome playing YouTube video

Question

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.

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

SW:

• 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:

Solution

I think I solved it.

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

Comments

[magicandre1981]

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.

[Martin]

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.

[magicandre1981]

the trace is corrupted. Set the value after -buffersize to 4096 and capture a new trace.

[Martin]

Ok next try: mega.co.nz/…

[Tim B James]

I have the same issue just now with Chrome version 40.0.2214.93

[magicandre1981]

@TimBJames also provide a xperf trace

[fostandy]

Martin - I have same issue. Lenovo W540, i7-4800MQ, Quadro K2100M. Windows 7 Ultimate 64-bit 40.0.2214.115 m. Thanks for your fix. @magicandre1981 do you still want a trace? Will be happy to provide if so.

[magicandre1981]

report this issue in the Chrome Bugtracker, so that the Chrome Team can fix it.