For me, there are only subtle differences. I use Chrome for work (golden browser for our web apps) and FF personally. Google maps has never worked well for me

For me, there are only subtle differences. I use Chrome for work (golden browser for our web apps) and FF personally. Google maps has never worked well for me on FF. The "old"/basic interface for Gmail works fine, but the new one was noticeably slower. It doesn't seem exclusive to Google, however. Many PWA sites (including bank websites!) have, from time to time, inexplicably failed to load certain elements on FF, while loading them without fail on GC. I don't really fault FF for this, but it is what it is. The good news is it seems to be getting better. Every month or so, I try these trouble sites in FF, and every month I have fewer "trouble sites".