- full uBlock support
- the ability to still be themed
- first-party isolation
...Okay, okay, I’m being too cheeky.
The common wisdom is that overall Firefox can feel bottlenecked at render and draw times (“less snappy”). That could be a result of a slower JavaScript engine (takes longer to get to drawing), or a result of poorer hardware acceleration (slower drawing), or a less optimized multiprocessing/multithreading model (more resource contention when drawing).
I honestly can't see it in the real world, but synthetic benchmark are pretty clear on that front.
The common wisdom is that overall Firefox can feel bottlenecked at render and draw times (“less snappy”). That could be a result of a slower JavaScript engine (takes longer to get to drawing), or a result of poorer hardware acceleration (slower drawing), or a less optimized multiprocessing/multithreading model (more resource contention when drawing).
I honestly can't see it in the real world, but synthetic benchmark are pretty clear on that front.