Quote Originally Posted by EasymodeX View Post
I've upgraded my model to handle dynamic GCD timing (using skill speed %; I don't know what the rating -> % conversion is)
The best suggestions I've found for this (working on my own sheets) was that Global Cooldown = 2.5 - 0.01 x roundup(speed/10).

That's what I've been going off until I find anything to disprove it.

*Note: the formula was not my own work and can be found here.