Firefox, for me, was very slow between 2019 and 2021. I used Firefox exclusively from 2016 to 2020, until I had to stop, because it just became unusable. Now i

Firefox, for me, was very slow between 2019 and 2021. I used Firefox exclusively from 2016 to 2020, until I had to stop, because it just became unusable. Now in 2023 Firefox is fast again, but so is Edge. As soon as Edge was usable, I ditched Chrome, and will only consider Firefox again if they add native vertical tabs. My point is, browsers are continuously updated, so any claim about a characteristic must be specified in some timeframe.