Firefox terribly slow on Ubuntu 16.04

Question

I tried all the solutions offered here:

• Mozilla Firefox terribly slow on Ubuntu 14.04
• Firefox 43.0.4 on Ubuntu 15.10 incredibly slow to load pages

Is there a solution given the the environment below?:

• Firefox browser version: 51.0.1 (64 bits)
• Operatin system: Ubuntu 16.04.2 (64 bits)

Note that the 2 other browsers available on my machine work just fine (not slow)

Answer 1

Change your desktop-enviroment to something lighter.