Quote Originally Posted by Kevee View Post
If there's 1.5s on the timer, you could have potentially gotten your full MPs worth of damage. So, yeah, you're refreshing the debuff earlier than if it ticked at .0~1s left on the timer, but you still got your full MP worth of damage.
Or one more tick may have been due during that 1.5 secs and you refreshed over it causing your previous cast to "essentially" lose one tick.

Until we get some add-on that shows us when DoTs tick most players are just going to work on keeping a DoT up 100% of the time to prevent a DPS loss and consistently clipping it 1.5 seconds early is in essence decreasing the duration of the spell by 1.5 seconds resulting in a 9% increase in MP over time to upkeep an 18 second duration spell.

While the goal is always to try and clip the least possible if you are constantly auto-queueing spells and firing them the moment GDC is up you only have windows to recast things during a multiple of whatever your GDC recast time is.

For example if your GDC is 2.4 seconds you will run into this issue with Bio II. If you consistently keep casting spells the moment they are available then when it's time to recast Bio II you can only weave it in 1.2 early or 1.2 seconds late. This means you can essentially do 3 things.

1) Clip it 1.2 seconds early resulting in your Bio II costing 4% more MP over time
2) Let it fall off for 1.2 seconds resulting in your Bio II doing 4% less damage over time
3) Wait 1.2 seconds before recasting the spell which means you are losing 1.2 seconds of GDC every 30 seconds

If you were to knock your spell speed down to 2.31 (or back up to 2.5) as long as you are consistently using your GDC the moment it is up you won't have this problem anymore since 2.31 divides cleanly into 30. Your Bio II should always be landing .03 seconds after the previous one has worn off (though I'm not sure if DoTs are only applied at specific server intervals).

Of course the problem is that DoTs have different durations so while a GDC of 2.4 seconds is terrible for Bio II and likely costing you extra damage, time, or MP it's also absolutely perfect for Miasma resulting in you reapplying Miasma the moment it falls off.