While I watched youtube I've noticed that my browser consumes too much CPU which is not normal. I started to research.
SOLUTION OF CPU BROWSER OVERLOAD
1. Open devtools->Application->Service Workers here you may see all this useless semimallicious scripts running on the background. Kill them all with unregister option.
2. This service workers could make notifications or other activity on background. They could be installed into your browser with a simple command
like navigator.serviceWorker.register('/dir/service-worker.js')
3. I have to figure out how to disallow this service workers to be installed again. Maybe some conditional breakpoint on navigator.serviceWorker.register
3.1. I've added chrome://serviceworker-internals as a default page on new tab opening as temporary solution to regularly delete service workers manualy. Especialy dangerouse is utube servise worker it consume a lot of CPU.