reference from here:
http://www.ghacks.net/2016/07/22/multi-process-firefox/
- Enable electrolysis
- in firefox "about:config"
- search "browser.tabs.remote.autostart"
- setting to "true"
- Tabs remote enable:
- in firefox "about:config"
- search "browser.tabs.remote.force-enable" (if not, create it, boolean)
- setting to "true"
- Accessibility enable:
- in firefox "about:config"
- search "accessibility.force_disabled"
- setting to "0"
- Check:
- in forefox "about:support"
- see option "Multiprocess Windows"
but, even now, I only see two of firefox task in the task-manager.