Less snappy animations in Matinee?

Simply, I have a character run into an idle pose. The character runs, slowly loses speed, then stands in idle. I’m trying to have this done with a matinee, because it’s apart of a cutscene. But the character runs then snaps into an idle pose. How would I have it less, or not at all, snappy and more smooth? Also, the closest thing on here I could find that would help me is HERE But I haven’t made any progress.