The beat the song is built on is a 2-bar phrase, played through bars 5-7, 9-11 and 13-15, and 36 more places -- 33.1% of every bar the kit plays. That is the spine of it; everything else is what happens around it.
It is played on crash, ride, snare, floor tom and kick, counted in sixteenth notes. On its own it scores 62 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 77 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 2-bar phrase on crash, ride, snare, floor tom and kick, in 4/4 at 180 BPM, counted in sixteenth notes. It is written out above, and it covers 33.1% of the bars the kit plays.
Bars 5-7, 9-11, 13-15 and 17-19, and 35 more places. The time is kept on the silence to start with, and it changes 20 times over the song.
62 out of 100 on its own -- a step up. The song as a whole is 77 out of 100: demanding, mostly on how many notes a second it asks for.