Originally Posted by Avitus

As explained previously there are 2 levels to break this down.

Logic and simulation: Logic we've explained above: FCFS DPS

Simulation (to figure out lucky "clash avoidance" patterns) is done in the post you linked. However, it's is unrealistic to map out a 2 min long chain of attacks and except 0 mess ups/latency at the hopes of gaining 1 less GCD clash here or there, it doesn't happen and you lose any perceived advantage.

I really don't know how much more we can talk in circles about this, it has been discussed over dozens of pages previously (the addition now being the new mechanic of RV and that has been resolved) and that conclusion was reached:

-Casting CS is in almost all cases more beneficial than casting DS first (unless multiple mobs obviously)
-FCFS DPS is the way to go