Paul sent a link viz.
If you look for a gear shape (cog) at the bottom right, this is settings and there is an option of playback speed. If you set this to it’s slowest, you may be able to learn from this video.
However you need to decipher the stances that he is doing before you start waving your hands about.
It should help but don’t go racing past where you are already comfortable with.
Killamarsh Tai Chi Sheffield Chesterfield 