> Firefox is slower than Chromium,
IME, ads introduce a 30% or more performance penalty, the only way Chrome is "faster" is if you view ads on FF.
So, sure, if you don't want to block ads, Chrome just might be slightly faster. But the browser that never fetches ads in the first place is always going to be faster.
For some bizarre reason you think that you can't block ads on Chromium. uBO Lite exists and blocks ads just as well as uBO.