> I don't really give up on programs that I used for years, both from being loyal to
> those who gave me something cool and because I don't want to readjust to changes, but
> firefox became painfully slow on computers that aren't high end and chrome is very
> fast. It got to a point where I threw my hands up in the air.
I think adblockplus started to slow Firefox down a lot, switching to ublock origin improved performance massively on my low-end machine, unfortunately as with any game of whack-a-mole the more difficult the ads become to detect / block the more complex the code to do so becomes, although actually allowing the ads to run is even worse for performance because they too are becoming more complex and offensive.
Everything slowed down in general tho due to extra layers of encryption and such, real shame that a machine that could easily play 720 content a few years back now stutters and stalls on the most basic of low bitrate youtube videos regardless of browser with no real end-user benefit.