The beat the song is built on is one bar, played through bars 4-19, 28-31 and 43-50, and 29 more places -- 64.9% of every bar the kit plays. Learn that one and the song is very nearly finished.
It is played on hi-hat, snare and kick, counted in sixteenth notes. On its own it scores 60 out of 100 -- a step up -- and the thing that decides that is how many notes a second it asks for.
The whole song is 75 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 111 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 111, 130, 150 and 170 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, snare and kick, in 4/4 at 170 BPM, counted in sixteenth notes. It is written out above, and it covers 64.9% of the bars the kit plays.
Bars 4-19, 28-31, 43-50 and 52-58, and 28 more places. The time is kept on the snare to start with, and it changes 10 times over the song.
60 out of 100 on its own -- a step up. The song as a whole is 75 out of 100: demanding, mostly on how many notes a second it asks for.