Browser Support • Re: Why is Pale Moon so slow?

It has not always been the case and, in the past, 2x.y PM versions used to be much faster and did not suffer from that closed-tab-post-lag effect.

They would also utterly fail to render the sites that are now causing those slowdowns. I'm pretty sure this is less of an issue for Chrome and Firefox because they just kill the content process that is messed up by the bad scripting and has a bunch of zombie events running circles on the CPU. Closing a tab there is effectively closing the browser. Opening a new tab is spinning up a new browser application.