Hitfilm slowmotion has a motion blur effect

I´ve recorded 2 videos in 60 FPS.
And at 0,5 speed it looks like this:
https://www.youtube.com/watch?v=kAprhnG3kIs&feature=youtu.be   (watch in hd)
I did the same in Windows Movie Maker:
https://www.youtube.com/watch?v=L9AbFgn03ik&feature=youtu.be           (watch in hd)

There´s a motion blur effect in HitFilm. Why?
Can you help me out?
Thank you,