Why my character isn't moving with lowfps?

Hello.

I have Vsync enabled in the project settings.

My player have 8direction movement. And he is moving by set vector X & set vector Y:

Then I'm checking if the player is in the water. And if it is true, I'm changing his speed by another value (movement speed and swimming speed)

But with low fps it barely moving in the water, however debug text that display his movespeed is saying that he is moving with max speed.

(especially with vector y movement)

There is nothing wrong with "in water" detection as I can see

The boolean "in water" sets correctly.

media4.giphy.com/media/v1.Y2lkPTc5MGI3NjExOHBkdHUwd2p0eWdwYnJlZnV4amF6ODFrc2kyanQzanExZGU1NGRsdSZlcD12MV9pbnRlcm5hbF9naWZfYnlfaWQmY3Q9Zw/axfLLeHnD5yHK2Dt54/giphy.gif

Here the gif

Main issue what I found, is that vector Y for some reason based out of fps or something. Because vector X working fine.

Might be issue of mine, but I cannot figure it out

I think its something about normalizing vectors with very this movement

I did the normalization, but the character is still slow on Y with low fps

Seems like it better doing with just Set X set Y without 8Direction...

Why are you, in one place, setting the vector components of 8direction, and, in another, setting the maximum speed of 8direction? How are you calculating your own variables "VectorX" and "VectorY"?

Ohh... this vector thing cost me redoing all the movement xd

Now I'm calculating it without 8direction at all and everything works fine.

Also I adjust in water detection, thanks for the advice