Originally Posted by
Xyronic
12th tick with everything up(metagem/BL/serking), is at 17382 haste rating, or 13382 with Kafa Press.
This is purely speculation, and damage values are from my gear level. For that 12th tick of doom, you are getting 2 extra ticks of crit doom (assuming everlasting affliction) ticking for ~250k + 2 imps, which do on average about 350k damage each. This would be about 1.2 million extra damage, just from that haste pot. Of course, you lose a lot of burst damage from not using an intellect pot at the start, and the haste pot doesnt really benefit your spell casting times since you're usually GCD capped anyways if you're haste stacking. Not sure if it's worth it.
The calculations I posted a couple of weeks ago were incorrect, so I apologize. The correct haste rating for 11 ticks with Meta/BL/serking is 12391 haste.