The beat the song is built on is one bar, played through bars 12, 14-15 and 20, and 17 more places -- 25.3% 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 thirty-second notes. On its own it scores 68 out of 100 -- demanding -- and the thing that decides that is how many notes a second it asks for.
The whole song is 79 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 114 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 114, 134, 155 and 175 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 175 BPM, counted in thirty-second notes. It is written out above, and it covers 25.3% of the bars the kit plays.
Bars 12, 14-15, 20 and 22, and 16 more places. The time is kept on the snare to start with, and it changes 24 times over the song.
68 out of 100 on its own -- demanding. The song as a whole is 79 out of 100: demanding, mostly on how many notes a second it asks for.