How to solve tearing problem with Nvidia OPTIMUS on Asus X566U(Q)

To solve this problem you have to install Bumblebee, mesa, xf86-video-intel, nvidia proprietary or nouveau driver.

1. Add yourself to a bumblebee group:

    sudo gpasswd -a user bumblebee
   

   Also you have to enable Bumblebee service:

    sudo systemctl enable bumblebeed.service
   

2. Create file 20-intel.conf in /etc/X11/xorg.conf.d/ and write next strings:

    Section "Device"
      Identifier "Intel Graphics"
      Driver "intel"
      Option "AccelMethod" "sna"
      Option "TearFree" "true"
    EndSection
   

And here you go :)