Chrome/Edge-Chrome High CPU usage in browser extension
I see the same. It occurs, for me, in "dynamic" sites that seem to be refreshing in the background with other workers(?). One is a ticketing system where the site will indicate if other agents are editing the ticket. No active text input is occurring.
The other is a remote management portal. It is particularly bad with CPU usage when I have a filtered result. It's like the site is continuously looking for other matches to the search and Editor gets busy, even though no typing is on-going. If I clear the search, that helps.