Whenever my companion kill an enemy, my view will FORCE to look at that sloooooooow motion scene. When it switch back to my view, my opponent is in front of me :banghead:

What the hell is this design? Why am I must look at my companion when he/she/it killed an enemy?

This sudden change of view not only freak me out but also distract me and give my opponent a nice opportunity to attack me!

Is there any option or mod which can cut this crap?

I believe the kill-cam is an option that can be disabled in the settings ~but I've never used companions in the game, so I am not positive about it.

Isn't that a good thing?

You can turn it off.