TBH, I used to hate Firefox&#x27;s performance, because even loading Facebook froze the entire browser for several msecs (enough to be perceptible), but recently I turned e10s[1] on and the browser feels almost as responsive as Chrome now.<p>The documentation seems to be outdated, there seems to be an A&#x2F;B testing right now, and it&#x27;s recommended to turn off some extensions[2], but this is how I forced e10s to be turned on in `about:config` in the beta:<p><pre><code>    {
        e10s.rollout.cohort: &quot;control&quot;,
        e10s.rollout.cohortSample: 78,
        extensions.e10sBlockedByAddons: false
    }
</code></pre>
[1] <a href="https:&#x2F;&#x2F;wiki.mozilla.org&#x2F;Electrolysis" rel="nofollow">https:&#x2F;&#x2F;wiki.mozilla.org&#x2F;Electrolysis</a><p>[2] <a href="https:&#x2F;&#x2F;www.arewee10syet.com&#x2F;" rel="nofollow">https:&#x2F;&#x2F;www.arewee10syet.com&#x2F;</a>