CPU high with no reason

Hi there,

I'm using MacBook pro High Sierra 10.13.6 and lately I encounter major issue with very high cpu load from numerous tasks such as kernel_task - up to 500%

coreaudiod -up to 100-200%

Google Chrome -100%

and even when I run the Etrecheck, the task itself jump to 120% cpu usage.

I just cannot work with my mac all of a sudden jump to high cpu and stuck itself.

I don't know what to do - It seems it is not a specific task that make cpu goes high, but every time different task make the cpu go too high.

What are you suggest me to do ?

Thanks