The beat the song is built on is a 2-bar phrase, played through bars 10-12, 14-16 and 26-28, and 9 more places -- 31.6% 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, kick and hi-hat foot, counted in thirty-second notes. On its own it scores 53 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 70 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 83 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 83, 97, 112 and 127 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, kick and hi-hat foot, in 4/4 at 127 BPM, counted in thirty-second notes. It is written out above, and it covers 31.6% of the bars the kit plays.
Bars 10-12, 14-16, 26-28 and 38-40, and 8 more places. The time is kept on the silence to start with, and it changes 15 times over the song.
53 out of 100 on its own -- a step up. The song as a whole is 70 out of 100: demanding, mostly on how fine the subdivision is.