The beat the song is built on is a 2-bar phrase, played through bars 26-36, 54-65 and 84-99 -- 42.9% of every bar the kit plays. Learn that one and most of the song is already under your hands.
It is played on hi-hat, mid tom and floor tom, counted in sixteenth notes. On its own it scores 67 out of 100 -- demanding -- and the thing that decides that is how many notes a second it asks for.
The whole song is 67 out of 100, so the beat is most of what the song asks for. Get it clean and the rest follows.
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 70 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 70, 82, 95 and 107 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, mid tom and floor tom, in 4/4 at 107 BPM, counted in sixteenth notes. It is written out above, and it covers 42.9% of the bars the kit plays.
Bars 26-36, 54-65 and 84-99. The time is kept on the silence to start with, and it changes 6 times over the song.
67 out of 100 on its own -- demanding. The song as a whole is 67 out of 100: demanding, mostly on how many notes a second it asks for.