As someone who has repeatedly switched browsers in 20 years... for some reason, sometimes Firefox has performance issues on some platform, or maybe just how it'

As someone who has repeatedly switched browsers in 20 years... for some reason, sometimes Firefox has performance issues on some platform, or maybe just how it's packaged. I've heard people describe Firefox on Windows as slow (I never had that, but on one Windows 7 installation I had Chrome be annoying and reinstalling/nuking profile didnt work), but I did have problems on Debian, 2 companies ago, so that's why I switched that machine to Chromium. Sometimes resetting the profile works, sometimes not. Sometimes you find yourself using Chrome features so often that you switch your main browser and don't look back for a few years. (FWIW, I use both on my work laptop, exclusively Firefox on home Windows machine + laptop, and again both on my older travel laptop). Also interestingly I semi often read about people ranting about Thunderbird being slow on Windows, something I've never experienced except when moving hundreds of mails manually - but I did have performance problems on Linux in the past..