Svсhost.exe (netsvcs) in the peak consumes up to 70% of CPU capacity. Is this normal?

ProcessExplorer from Mark Russinovich knows how to show stack process, I advise you to look at. In the list of threads, search for eating and view the name of the dll. Usually, this kind of service. Most likely SuperFetch is a lot of complaints. Svchost is responsible for starting services
You can see using ProcMon from the same Russinovich

Run this program svchostviewer and see what service does.

try using the task Manager to correlate the process and service: view PID grooving svchost.exe and find this PID in the Services.

What you have svhost.exe is not normal :) all of — svchost.exe.
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I once had it but unfortunately I do not remember why and how to fix... Remember softinos watched from sysinternals, and then found and corrected.
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Write on the Internet for automatic updates, or virus, or install the latest updates and service pack.

Hmm, I also had, and still accompanied by the departure process and the Internet, was treated by reboot, but only temporarily. then it was a virus.

Hmmm here's my problem: this is Raidcall. Try to remove or twist something in the settings.