100% CPU usage while normal browsing / video watching.

Hello all,

I have a win 7 pro x64, Lenovo T440s, i7, 8gb ram.

I've noticed recently that when I watch videos or have a few tabs open on chrome the usage goes up significantly.

(see attached image http://i.imgur.com/uwsg4Ny.png, the secondmost user of CPU is svchost.exe (netsvcs) in the photo ).

I had just restarted and cleared out msconfig to minimize any processes, ran MSE, malwarebytes and all negative.

Played around with enable/disable hardware acceleration, downloaded and enabled h264ify because of a reddit post I saw, disabled all extensions in chrome, hangouts, etc. No result. My internet is ~ 50 mbits, issue happens even if video is fully buffered.

Any ideas? I'm thinking that with the computer I have I shouldn't have an issue watching a youtube video without stuttering due to high CPU usage, it really makes it frustrating. Opening any new tabs also takes a few second and the CPU usage peaks quite high.

Thanks a ton!

(Laptop is plugged in, in "max performance mode" with turboboost on, but was happening with turboboost off as well, temps under 40C)

Edit: OK so I just unplugged the power cable and CPU usage dropped to ~ 40% and the 1080p video runs smoothly. What gives?

Apparently the max freq of the CPU drops to ~ 28% while plugged in. I already checked the power settings and are all at max performance 100%.

Edit 2: Apparently Lenovo Power Manager is commonly has bugs, uninstalled & registry deleted, restarted and now max freq of the CPU is 100%+ and the CPU usage is under 30% with the video playing