Energy Regen as a function of Weapon Speed and Mitigation, without any speed mods.
ER (S, M)
= (1/S) * (1 - M) * 20% * 15
= 3 * (1-M) / S
Grahpically depict, ER (S, M) looks like:
To maximize ER, take partial derivative on S:
d ER / d S = -3 * (1 - M) / S^2
No minimum or maximum function can be obtained as this is an negative squared function, but the graph indicates that any weapon speed 2.0 or under offers higher marginal value than those with speed 2.0 or above. Doubling OH weapon speed will reduce the rate of energy regen by 50%.
Combat potency has proc quite often during PvE fights with my 1.8 speed Anbisath Warhammer, and I would have to adjust/micro manage my PvE cycles because of the energy regen. Instead of a steady 5/5 SnD cycles, I could actually throw in a few cp worth of rupture when I got lucky on procs.
- ER (S, M) = 3 * (1-M) / S, without any speed mods such as BF/SnD. To factor BF into account, multiply everything by 1.2; SnD, 1.3; both, 1.5.
- Combat potency benefits much more from fast OH weapons than slow ones.