I tried different settings, but I haven't received the desired result.
Either the animation is smooth but first it slow then speeds up and then slows down at the end (Bezier) or animation rude but it has one speed (Linear).
Example:
Is there a way to make the animation smooth and have it play with one speed without acceleration & deceleration?
The image above is the simplest way to visualize what i mean, but the image in this link shows the kind of objects i'm animating, and it behaves quite abrupt when Linear, but Bezier gives pronounced easing in-out: