The beat the song is built on is a 2-bar phrase, played through bars 5-20, 82-97 and 106-121 -- 33.6% 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, 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 the independence between the hands and the feet.
The whole song is 67 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 77 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 77, 90, 104 and 118 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 hi-hat, snare, kick and hi-hat foot, in 4/4 at 118 BPM, counted in sixteenth notes. It is written out above, and it covers 33.6% of the bars the kit plays.
Bars 5-20, 82-97 and 106-121. The time is kept on the kick and crashes to start with, and it changes 10 times over the song.
53 out of 100 on its own -- a step up. The song as a whole is 67 out of 100: demanding, mostly on the independence between the hands and the feet.