MsMpEng.exe very high CPU and Memory usage

[REDACTED]

Hello!
I am using Windows 10 Pro. I have get Antimalware Service Executable high CPU usage on my machine. I tried using Avast Free Antivirus to kill MsMpEng.exe, but it did not work. I still see random RAM usage spikes, to upwards of 1/1.5 GB's, which will then drop the the normal memory usage. However, when the memory drops, the CPU usage starts to go up, very slowly, until it reaches 100%.
Could anyone give me a hand here?

[Eddy]

And what has this got to do with SecureLine ?

[DavidR]

I don't know how you are trying to get avast to kill it as that isn't a function of avast, it is looking for malware. When you install avast (or any other AV), windows 10 should disable the Windows Defender function, not avast.

Check out some of the search hits on that file name, https://search.yahoo.com/search?p=MsMpEng.exe.