[Minous]

Originally Posted by Krothos

How is the encumbrance/armor penalty only -5 with a hasted movement of 40'? As per RAW for 40 ft of movement, the encumbrance/armor penalized movement is 30'.

http://paizo.com/pathfinderRPG/prd/c...er-base-speeds

Is there another rule I'm missing?

Because its calculated base off base speed. Haste does not modify base speed, rather it provides and enhancement bonus of up to your base speed or 30 (Whichever is less) Note: Boots of Striding and Springing do not stack with haste either.