Fine. Now can you explain to me why is Firefox 45 so laggy, a RAM and a CPU hog that you need a very expensive 8 core with 16GB of RAM to run it *reasonably well* with these days? Why wouldn't it run smoothly on an ARM CPU with 2GB of RAM? I remember Firefox 3 and 4 running smoothly on this AMD Phenom II 965 with 8GB of RAM but with version 45 it just works like it's been programmed in Spectrum basic or something. If that's the future it looks very, very bleak.
Posting this from 51.0.1 on an 8-year-old Core 2 Duo with 8 Gb of RAM and around 20-30 tabs and it seems to work fine to me (even with a fat load of extensions).
Research is to see what everybody else has seen, and think what nobody else has thought.