Kiet, if you're referring to the video then I think TZ may have pushed shout reduction alot higher than I did in the build.
If you're talking about movement speed though it's because slow time does improve as you add more words to the shout, you get faster and the enemy gets slower and the duration of the shout lasts 50% longer due to the necromage perk, that means it's usually ready to use again by the time it eventually runs out...
Kiet, if you're referring to the video then I think TZ may have pushed shout reduction alot higher than I did in the build.
If you're talking about movement speed though it's because slow time does improve as you add more words to the shout, you get faster and the enemy gets slower and the duration of the shout lasts 50% longer due to the necromage perk, that means it's usually ready to use again by the time it eventually runs out...