Comment 2 for bug 1890533

Please try these. You can stop at any step if the problem goes away...

1. Reboot, make sure you still see stuttering and then run these commands:

   lspci -k > lspcik.txt
   journalctl -b0 > journal.txt

   and attach the resulting text files here.

2. Completely uninstall these extensions:

   <email address hidden>', '<email address hidden>', '<email address hidden>'

   then reboot.

3. Disable 'Ubuntu AppIndicators' in the 'Extensions' app, then log out and in again.

4. Edit /etc/environment and add a new line:

   MESA_LOADER_DRIVER_OVERRIDE=i965

   then reboot.