I recently bought a cheap&small office laptop with intention of taking it with me and completing assignments in public places. Problem is, it chokes up and dies when running more than eight tabs on firefox. I also tried k-meleon, it has great performance but the UI is ancient and many websites that I need dont support it.
Do you need to have more than eight tabs open at once? If you do (and uBlock Origin doesn’t help), there are many WebKit-based browsers that may be somewhat faster (e.g. qutebrowser), but basically all modern browsers are massive because of JavaScript (if you don’t need JavaScript, there’s always NetSurf). I also tried Midori a few years ago, but apparently it’s now a different, Electron-based browser, so it’s probably just as slow