This was very helpful. On ubuntuforums, it was suggested that I check
the "Optimus" setting under the "Video" menu in the BIOS. That solved
half the problem. Then following your suggestion and changing the
Multimedia engine in SMPlayer to /usr/bin/mpv solved the other half.
Nvidia currently works
Thanks for the bug report. VLC and Mplayer do not enable hardware
acceleration by default that I know of. So high CPU is expected. Please
try using 'mpv' for the most performant experience.
If I have missed anything then please state it here in this bug instead
of providing external links.
** Pac
