Thanks for the report Tony. Can you confirm that it's only switching in and out of fullscreen mode that's laggy, playback is otherwise smooth?
Could you please run the following command in a terminal to attach additional information to the bug report: apport-collect 1871618 ** Changed in: chromium-browser (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1871618 Title: Switching playing youtube video to full-screen mode and to default mode lag on Chromium To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/chromium-browser/+bug/1871618/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs