The beat the song is built on is one bar, played through bars 17-23, 33-39 and 49-57, and 4 more places -- 34.1% of every bar the kit plays. That is the spine of it; everything else is what happens around it.
It is played on hi-hat, snare and kick, counted in sixteenth notes. On its own it scores 70 out of 100 -- demanding -- and the thing that decides that is the independence between the hands and the feet.
The whole song is 88 out of 100, so the beat is not the hard part: what costs you is everything around it, the joins and the fills.
A part this hard is not learned by playing it slowly and hoping. The room opens it on its simplest reduction -- the timekeeper alone, at 111 BPM -- and adds the notes back over 4 rungs, each with a tempo to reach and a gate to pass before the next.
Tempo goes 111, 131, 151 and 171 BPM, and the gate at each one is 8 loops in a row with no wrong note and no wobble in the time.
PRACTISE THIS BEAT →A one-bar groove on hi-hat, snare and kick, in 4/4 at 171 BPM, counted in sixteenth notes. It is written out above, and it covers 34.1% of the bars the kit plays.
Bars 17-23, 33-39, 49-57 and 59-65, and 3 more places.
70 out of 100 on its own -- demanding. The song as a whole is 88 out of 100. Hard, and what makes it hard is the independence between the hands and the feet.