Windows 10: tiworker randomly doing something for 20-30 minutes, eating 50% cpu

I have this annoying issue on my Windows 10 tablet, and because it is a tablet, I dont want something like this happening of course, that tiworker is doing something every once in a while, maybe once a week, or once every 2-3 weeks, maybe once every few day, suddenly taking 50%. And it takes about 20-30 minutes, afterwards it's finished.

When I look into Windows Updates, no update is taking place, nor is MS Store installing any app updates. So what is this tiworker doing every once in a while for so long, 20 minutes, eating 50% cpu? Task manager shows, that it has 1.8-2.8MB/s disk usage over this time, so its doing something.

I also looked into Windows Scheduler and I cant see any "active timers active".

Is there a way to debug, what tiworker is doing, and maybe deactivate it?

:)

 

WIn 10 Tiworker.exe CPU hogging

6 Tips to Fix High CPU Usage by Tiworker.exe Process on Windows 10 hope this helps.
Here is another that suggests what Microsoft suggested.

https://appuals.com/best-fix-high-cpu-usage-tiworker-exe/

Part of windows updates.

 

Laptop very hot, fan constantly running since installing Win 10

Also, there are two processes that are eating up the CPU:

-Runtime Broker up to 30-40%

-Antimalware Executable up to 20%

How can I reduce these?