Better container support would be ace but dismissing FF because of that complaint when no other browser even has that feature is a little like cutting off your

Better container support would be ace but dismissing FF because of that complaint when no other browser even has that feature is a little like cutting off your nose to spite your face. Regarding performance on macOS, Firefox runs fine for me and I very very rarely have below 50 tabs open. Have you tried it recently? I had read there were some bugs with macOS but most of those were resolved a couple of years ago.