Ubuntu 19 Intel graphics laptop slow video playback/stuttering fix

Do

sudo mkdir -p /etc/X11/xorg.conf.d/
sudo vim /etc/X11/xorg.conf.d/20-intel.conf

Then paste this to the file

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

Reboot