The beat the song is built on is a 2-bar phrase, played through bars 24-31 and 66-73 -- 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, high tom and kick, counted in thirty-second notes. On its own it scores 100 out of 100 -- hard -- and the thing that decides that is how many notes a second it asks for.
The whole song is 91 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 61 BPM -- and adds the notes back over 5 rungs, each with a tempo to reach and a gate to pass before the next.
Tempo goes 61, 73, 85, 98 and 110 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, high tom and kick, in 4/4 at 110 BPM, counted in thirty-second notes. It is written out above, and it covers 26.7% of the bars the kit plays.
Bars 24-31 and 66-73. The time is kept on the hi-hat to start with, and it changes 10 times over the song.
100 out of 100 on its own -- hard. The song as a whole is 91 out of 100. Hard, and what makes it hard is the independence between the hands and the feet.