Such a webbrowser would be unable to render a large chunk of the internet, which doesn't sound overly useful.
I'm sure if you dug up a copy of an early netscape version it would be very fast on a modern machine, while failing to render most of the internet, if that's what you want.
Such a webbrowser would be unable to render a large chunk of the internet, which doesn't sound overly useful.
It wouldn't be able to render a large chunk of the Internet as designed, which, frankly, with 1106 local custom stylesheets applied to fix a huge range of crap and annoyances, sounds very useful and desirable.
Web design isn't the solution, Web design is the problem.