Remember when fog spells slowed enemies down?

[MrCow]

In the event it hasn't been mentioned yet, the issue with fog-based slowing is that it appears to take place on critters only if they are subjected to another slowing effect at the same time (such as being fatigued, exhausted, slowed, hamstring'd, crippled, tendon sliced, and so on while in a slowing fog), otherwise the fog-based slow effect is ignored.

While you're at it, check the speed of human type enemies. They act like they are perma-hasted.

Yep. Since Update 1 when we got the humanoids in the Inspired Quarters there was a change to all humans (and those who are closely linked to the human model) such that they run about 125% run speed. The change can be assumed that it was accidentally made global when it was meant solely for the Inspired humanoids that came with the update's new quests.