The beat the song is built on is one bar, played through bars 39-53, 77-91 and 141-143, and 1 more place -- 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 sixteenth notes. On its own it scores 58 out of 100 -- a step up -- and the thing that decides that is how many notes a second it asks for.
The whole song is 81 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 117 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 117, 138, 159 and 180 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 180 BPM, counted in sixteenth notes. It is written out above, and it covers 25.3% of the bars the kit plays.
Bars 39-53, 77-91, 141-143 and 171-185. The time is kept on the toms to start with, and it changes 26 times over the song.
58 out of 100 on its own -- a step up. The song as a whole is 81 out of 100. Hard, and what makes it hard is how many notes a second it asks for.