Player acts differently based on framerate?

You use some default components from UE4 for moment or you made something else using Tick? if first please tell me which component

I am working on a game that includes a drivable object with the driving characteristics much like a tank. At 60 fps the movement works just fine however if I lock the frame rate to 30 (to test the game for lower end PCs) the movements is very slow, glitchy, and sluggish.
Any ideas what the problem is? I am thinking its either a blueprint setup, or the collision of the object and the floor.

I haven’t used any ticks,

here are the movement controls in the player blueprint

Have you solved the problem?
I am also trying to adapt player movement at the framerate.

No, problem still exists so I just moved around it for now.