The beat the song is built on is one bar, played through bars 68-72, 76-78 and 80, and 21 more places -- 27.5% of every bar the kit plays. That is the spine of it; everything else is what happens around it.
It is played on ride, snare and kick, counted in thirty-second 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 68 out of 100, so the beat is not the hard part: what costs you is everything around it, the joins and the fills.
There is not much to reduce here -- the room opens it near enough as written, at 40 BPM, and asks for it clean before it moves.
Two tempos only, 40 and 41 BPM, and the gate at each is 8 loops in a row with no wrong note and no wobble in the time.
PRACTISE THIS BEAT →A one-bar groove on ride, snare and kick, in 4/4 at 41 BPM, counted in thirty-second notes. It is written out above, and it covers 27.5% of the bars the kit plays.
Bars 68-72, 76-78, 80 and 84-86, and 20 more places. The time is kept on the silence to start with, and it changes 10 times over the song.
55 out of 100 on its own -- a step up. The song as a whole is 68 out of 100: demanding, mostly on the independence between the hands and the feet.