Firefox 57 CPU usage is insane

from blog Muffin Man, | ↗ original
This is a sad rant :( I love Firefox (and Mozilla too) and have never switched to Chrome (Although I use Chrome for development.) But few days ago I switched to Opera, because new Firefox's (aka Quantum) CPU usage is insane. Disabling extensions didn't help, it just hogs all available resources. MacOS is giving me "Service Battery" warning when...