It seems that the stored sublimation is still capping at the old 25% of hp value for the actual mp. (meaning if you had 1200 hp it will only store 25% of that in mp - in this case 300 - no matter how fast you got there).
Getting to a fully stored charge is taking me just under 2 minutes in Abyssea atm, and while I have my robe and wizard hat for 4hp/tic I can;t test much more until I get out of Abyssea.
It's still a nice boost, but shame it has been offset by the 30 second cooldown so much
Edit: took 1:38 to store 306MP with af body + relic hat, after which sublimation was capped (level 88). Still draining 4HP/tic
Edited, Dec 7th 2010 3:11pm by Xakz