The load on the processor is 40% - 60% while nothing is open, but if you turn off the Internet / open the task manager, the load drops, what should I do?

Question

Windows

My system: Windows 10 pro 20H2

When you open: process hacker 2, process explorer, the load also drops . I look at the load

through: Rainmeter (widgets) and through Nitrosence (software for acer nitro laptops)

I think I outlined the essence of the issue.

Answer 1

It looks like a virus (or rather a miner).
Although if the opening of the dispatcher coincides with the exit from afk, then it may just be some kind of optimization / update service that works in idle time.

Answer 2

Check for viruses
Disable the sysmain service and update Windows
After checking