Firefox is using 100% CPU in my Desktop. i though maybe its time to switch to another browser like Chrome or Opera Browser and see the differences. in my case Manjaro Linux firefox browser is standard installed with the os but im not really happy with performance.
Lets me show you how to Install Google Chrome in Archlinux and Manjaro Linux
Method1
Please find add/remove software under your administration tools

Under options > Preferences

Under Aur repository, please Enable AUR support and check to get updates from there

Please apply and back to find google-chrome under packages 
Select the Package to buid 
Building the package 
Now check if Chrome has been installed and run it

Method2
to install Google-chrome you need to install Git Client
you can install git with this command
sudo pacman-S git

Go to Google Chrome AUR repository at https://aur.archlinux.org/packages/google-chrome/Â and you should see the following page

Please clone the git url with this command
git clone https://aur.archlinux.org/google-chrome.git

Go to google-chrome directory

Please build the package for Archlinux/Majaro Linux using the command makepkg -s
makepkg -s

The makepkg Command will build the package inside the same directory that you can install  with command sudo pacman -U file.tar.xz
sudo pacman -U google-chrome*.tar.xz

Please Enjoy  your Installed Google Chrome Browser in Archlinux or Manjaro



NOTE: This fails for AARCH64 architecture. (RaspberryPi, Pinebook, Pinebook Pro, etc)