I don't see any big difference in terms of performance between both. As both are just wrappers on top of Chromium browser, they both perform almost the same I believe. Also, I have more than 25 tabs always open on both the browsers all the time. I don't see any delays or anything. Maybe my laptop specs are also contributing to that.
Recently Chromium introduced a new feature where when a tab is not in use, it wouldn't consume any resources. I guess it went like last week.
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