VInterp loops weirdly at end of curve

Hey all, So I cant seem to get my Vinterp to work, it does this wierd up and down loop like gravity wants to pull it down but it keeps trying to get it to go to the set actor location. Got 2 print strings here, one showing before the interp and one after, you can see in the pic kinda that the black and red points(one is by his elbow) are not at the same location, but they should be because the interp after a few seconds should be at its end, its 1. Thanks in advance!