What are alternatives to RobloxTweenService?

I have successfully managed to create a string of Rays which simulates a projectiles motion. The only thing I have left to do is to Tween the bullet from the start of one ray, to the end of the next and so on a so forth. The problem is, when I do this the projectile is very janky and broken looking, so what alternatives can I use to RobloxTweenService?

lerp is an alternative to tween, there are different types of lerp functions that can make the animation look more smooth. I'll link a video that is helpful. Link - https://www.youtube.com/watch?v=Yhg6_2UjtCM