Thanks Ernest. Did removing mesa-va-driver also fix the choppy mpv behaviour? You might also want to try this:
mkdir ~/.config/mpv echo hwdec=no > ~/.config/mpv/mpv.conf
Kent: It sounds like your issue is just slightly different if "Ubuntu on Xorg" is working for you. You may want to consider opening a new bug as resolving Ernest's issue may not also solve yours.
Thanks Ernest. Did removing mesa-va-driver also fix the choppy mpv behaviour? You might also want to try this:
mkdir ~/.config/mpv mpv/mpv. conf
echo hwdec=no > ~/.config/
Kent: It sounds like your issue is just slightly different if "Ubuntu on Xorg" is working for you. You may want to consider opening a new bug as resolving Ernest's issue may not also solve yours.