[tylerhou]

I can “crash” a tab by running an infinite JS loop, or sending a bunch of data. Crashing doesn’t seem like a big deal.

[olliej]

It’s much less of a problem now that all browsers are running each tab in a separate process. It used to be so much worse.

[CodesInChaos]

Firefox manages to produce whole browser lag and freezes pretty often. And while it uses multiple processes, it's not using one per tab or origin.