Side channel attacks sure have the tendency to introduce security vs performance tradeoffs. But it looks like they've made a pretty reasonable decision by turn

Side channel attacks sure have the tendency to introduce security vs performance tradeoffs. But it looks like they've made a pretty reasonable decision by turning it on for only capable devices, and by starting with highly-sensitive sites. I definitely prefer this to the original Spectre fix of simple disabling highly sensitive timers. As far as I know, other browsers are still using that solution.