There are websites, and then there are web applications.

The line is more than a little blurry, but one key differentiator as developers seek to deliver a richer, more "native" experience in the browser is the execution of LOTS of client-side JavaScript.

Chromium-based browsers, e.g. Google Chrome, Brave, Opera, Vivaldi and (ugh) Microsoft Edge, all utilize a high-performance JavaScript execution engine, called V8.

If you decide to "ditch Chrome" for security or other reasons, make sure you're not unknowingly ditching decent performance on your favorite web sites/applications.