@acidinmyfridge That's not entirely true, in the post I made, if you can see I put the same Opera extensions in Chrome and the same tabs open in Opera, exactly the same open, the difference is that Opera consumption is twice as much as as Chrome does.
As a software developer, I use several browsers to test web applications, I use Vivaldi, Chrome, Brave, Edge, Firefox, and everyone who has the most consumption is Opera, you can do the analysis yourself.
I love Opera, it is my favorite browser, but the high consumption is making it fall, if we do not want to stop and see what may be happening or improve in this aspect, I tell you that the copetence is great, more concrete case with Vivaldi, that It is doing well.
I enclose the images again so you can see the detail of what I say.
Opera Tabs Open
Let's now look at the same tabs with chrome
Chrome Tabs Open
Processor consumption in Windows Task Manager