its pretty useless anyways, just a waste of a perk, ive never even used it. dont know why you bother with it haha
Far from it my friend. Aside from allowing you to easily dodge or cancel the most dangerous attack that enemies will have, it makes combat very fun and dynamic. Instead of the repetitive hack and slash, you wait for them to attack you and in the blink of an eye, step behind and cut them down.
Shield bashing and shield charging are also very fun. Shield charging may be pretty unrealistic, but it is definitely nice knowing my warrior is an actual bulldozer! It also removes unrelenting force (and other similar shouts) as a warrior's main crowd control options, letting them use more beneficial ones, like elemental fury and slow time, both of which enhance the fun-factor of combat greatly.
EDIT: I forgot to make an on topic post.

I'm sorry that you're having problems, as mine has never glitched ever. svcks that you miss out on such a fun perk. Anyway, I can guarantee that stamina is not an issue and it DOESN'T deplete stamina at all.