The beat the song is built on is one bar, played through bars 10-17, 26-33 and 42-57, and 1 more place -- 62.3% of every bar the kit plays. Learn that one and the song is very nearly finished.
It is played on hi-hat and kick, counted in sixteenth notes. On its own it scores 55 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 65 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 52 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 52, 61, 71 and 80 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 and kick, in 4/4 at 80 BPM, counted in sixteenth notes. It is written out above, and it covers 62.3% of the bars the kit plays.
Bars 10-17, 26-33, 42-57 and 62-77. The time is kept on the hi-hat to start with, and it changes 4 times over the song.
55 out of 100 on its own -- a step up. The song as a whole is 65 out of 100: demanding, mostly on the independence between the hands and the feet.