Weird blendtree behaviour in Unity

A gif is better than a thousand words

I'll just explain the gif a little here. I have a blendtree with 8 animations, one for each direction the character will face in the game.
Then i show two of the animations in the blendtree that are exactly the same and have the same length. All this animation does is rotate the sprite 360 degrees.
Then i play one of these animations and you can see the sprite rotating and taking 10 seconds to do the complete turn. But then i show the second animation, wich should take 10 seconds to rotate as well and it takes only 3.
I have no idea what is happening that one of the animations is playing super fast .

edit:
alright, took me hours to figure out how stupid i am. In the blend tree i changed the animation speed field as if it was the blend threshold