The beat the song is built on is a 2-bar phrase, played through bars 8-14, 16-22 and 24-30, and 8 more places -- 74% of every bar the kit plays. Learn that one and the song is very nearly finished.
It is played on hi-hat, snare, kick and hi-hat foot, counted in sixteenth notes. On its own it scores 66 out of 100 -- demanding -- and the thing that decides that is how many notes a second it asks for.
The whole song is 76 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 89 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 89, 105, 121 and 137 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 137 BPM, counted in sixteenth notes. It is written out above, and it covers 74% of the bars the kit plays.
Bars 8-14, 16-22, 24-30 and 32-38, and 7 more places. The time is kept on the silence to start with, and it changes 3 times over the song.
66 out of 100 on its own -- demanding. The song as a whole is 76 out of 100: demanding, mostly on how many notes a second it asks for.