The beat the song is built on is a 2-bar phrase, played through bars 49-72, 89-112 and 181-195, and 2 more places -- 32.8% of every bar the kit plays. That is the spine of it; everything else is what happens around it.
It is played on snare, kick and hi-hat foot, counted in sixteenth notes. On its own it scores 44 out of 100 -- a fair first song -- and the thing that decides that is how many notes a second it asks for.
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 107 BPM -- and adds the notes back over 3 rungs, each with a tempo to reach and a gate to pass before the next.
Tempo goes 107, 124 and 142 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 snare, kick and hi-hat foot, in 4/4 at 142 BPM, counted in sixteenth notes. It is written out above, and it covers 32.8% of the bars the kit plays.
Bars 49-72, 89-112, 181-195 and 199, and 1 more place. The time is kept on the silence to start with, and it changes 17 times over the song.
44 out of 100 on its own -- a fair first song. The song as a whole is 65 out of 100: demanding, mostly on how many notes a second it asks for.