I am stuck with a problem that happens to me all the time using tweens. The last frame equals the change of the few last frames, or the frame before the last one has moved farther than the last.

Like the MC is moving 1 pixel per frame, then on the final step it moves 10 pixels forward ! I used to fix it by adding extra keyframes, but I thought I'd ask you guys and see if anyone gets this problem.

Here's an example since it's a little hard to explain :

Inconsistent tween

The gun and upper hand both start and end in the exact same spot, yet do not follow the same path at all.