The beat the song is built on is one bar, played through bars 25-27, 29-31 and 33-35, and 9 more places -- 26.7% 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, mid tom, kick and hi-hat foot, counted in sixteenth 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 66 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 99 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 99, 117, 134 and 152 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, mid tom, kick and hi-hat foot, in 4/4 at 152 BPM, counted in sixteenth notes. It is written out above, and it covers 26.7% of the bars the kit plays.
Bars 25-27, 29-31, 33-35 and 37-39, and 8 more places. The time is kept on the silence to start with, and it changes 12 times over the song.
53 out of 100 on its own -- a step up. The song as a whole is 66 out of 100: demanding, mostly on how many notes a second it asks for.