Buy a $35 Raspberry Pi and setup Pi-hole; now all of your browsers are fast, as well as your mobile phones, TVs, and other devices.

I prefer Firefox and derivatives because I can hack the guts to make it do what I want. I also run uBlock Origin, Decentraleyes, Privacy Badger, No Coin, and others. I also block HTTP/S referrer, visited links (history visbile to websites), geo location, WebRTC (prevents sites from seeing your private address schema), and others. I also use a proxy server that allows me to appear from different regions. I also block access to font discovery. Yes, I realise this creates a unique "fingerprint" of my systems, but I've never had malware, or rogue Javascript.

This is done for all devices on my network under my control. Needless to say, with the Pi-hole and other settings, speed and bandwidth are great. Highly recommended.