For Changing Tides mana speed, it seems from my data that the “uneven” (first, third, fifth…) mana bars require 800mp (this indeed matches fast mana speed; FYI 1400mp for PvE bosses) but for the even charges (second, fourth, sixth…), it’s not actually 1000mp (like average) but again, like mana speeds with charges, it’s still 800mp with a -25% mana generation modifier (so with no mana generation bonus, it makes it actually 10.67 tiles to charge on offense).