i did post here as a reminder for manjaro users i hope for the next mpv package, I get the problem from HD format from digital terrestrial TV, probably im the only user that watch tv using tvheadend, using using mpv on Pi4 . Desktop sway without xwayland (xwayland disable in sway config).
After latest update downgrade wasnt enough:
the fastest way to get h264 smooth was to switch from unstable to stable branch and downgrade mpv and placebo.