In Fusion 2.5 there is built in movements to make your game development a little easier and faster without you having to do a one your self

Unfortuntly even if most of the movements are very good, there is 3 of them that is just terrible which are:

- Eight Directions:
It's physics and collisions are very wonky, for example in the physics aspect when you accelerate to a direction and then change to a new direction it instantly accelerates in the new direction which is very weird, there is also the terrible collisions it has for example when it goes to a wall it keeps bouncing, this can be fixed with checking (Stick to obstacles) option but it can still "drag" when colliding with obstalces and such, it's just bad don't use it other than for very basic stuff like for example a paddle movement

- Race Car:
This one isn't terrible it's just very basic for a car movement
as you can always make your custom one to be much better

- BLOODY PLATFORM MOVEMENT
This one is just pure terrible, easily the worst platform movement I ever seen in my life even at 1994 ( which it was first developed for Klik & Play ) it was terrible because of it's collision can basicly get stuck and drag on walls and it's physics are just weird, btw this movement coudn't have been just updated in newer Click products because it would break some games made at the time that took advantages of it's bugs

there is a lot of alternatives to this movement like:

- ( Physical ) Platform movement
- PMO object
- Just make your custom Platform movement

Hope that clears some stuff about these movements
so atleast don't ever use ( non physical ) Platform movement!