Originally Posted by
Aiurily
just for anyone who's wondering, you can only fit fracture in 3 fell cleave in zerk if you berserk after a heavy swing. otherwise you lose eye/bb combo etc afaik
edit: heres some more bad napkin math on to fracture or to not fracture
fell cleave: 693 potency after modifiers (1.05 x 1.2 x 1.1) [deliverance, maim, eye]
average potency per gcd without fracture (eye/bb alternate) after modifiers - 286.44
fell cleave potency gain - 406.56
average gcds to build 5 stacks - 7.5
average potency gain per gcd towards fell cleave - 54.208
fracture potency after modifiers - 390.6 (accounting for slash debuff and dot inteaction)
fracture potency gain compared to the average gcd - 104.66, which becomes 49.952 after you account for the fact you're losing GCDs towards fell cleave. even if you know you have to double eye in order to keep fracture up, it's 22.232 potency increase still (since you lose some potency from not being able to bb combo for more dps)
this also doesn't account for wasted stacks of abandon and assumes you will always build a fell cleave in 7.5 gcds, disregarding the oGCD tools you have to build stacks as well (which i don't think should matter, since it's not in your GCD anyway, but i may be wrong). but if you waste your stacks and increase your average gcd towards fell cleave in your encounter, then fracture becomes more effective, rather than less. this also doesn't account for increased crit from building stacks faster with a no fracture rotation, and stuff like that. but anyway..
so if it's better in a vacuum and if this math is somehow actually correct (lol, yeah right), then you ideally want to fracture, but not in the same rotation as double/triple fell cleaves after you apply eye. try your best to snapshot it with IR/abandon stacks, but making room for BB combo for extra potency is a priority still, even if you sacrificed 100% fracture uptime for it (imo at least). although if you have fey wind up, i think you can afford 3 gcds extra after an eye combo and still refresh eye on itself; as long as you have fey wind for most of that rotation's duration.
now for 9 skill berserk rotations, whether that fracture is worth it or not (since you'll always want to double fell cleave in berserk; thus if you fracture in most cases, you will lose eye on its own reapplication) is something im too lazy to dive into. but if you start your berserk after a heavy swing, the issue isn't existent anyway (at least for triple fell cleave) because your 8th gcd should be 5 abandon fracture, then 9th fell cleave (as opposed to 8th fell cleave, 9th heavy swing)