Found a nice fingerpicking / slap excercise from a video featuring Tosin Abasi (Animals As Leaders) @ this year's Namm.
Check out at 1:00 marker; Thumb + thumb + 1 + 2 fingerpicking pattern, with hammer-on's @ left hand.
Attempt the same tempo as in the video. Now go practice
Dont forget to watch the whole video. Hehe.

Very impressive stuff, but I will never do that.

I have zero want to be able to play that.....