Having trouble setting up Mouse Cursor Relative

I've been trying to make a layout for Minecraft Java, and I've decided to dedicate the DPad to inventory movement. In order to simulate a snapping effect, I went for Mouse Cursor Relative.

After measuring the size of a tile, I have gone for increments of 54 pixels, so far, so good.

Got my measurements, a tile is 54*54.

When I press a direction for the first time, it works! It snaps to the exact position needed!

No right DPad inputs.

One right DPad input.

But when I go in a certain direction more than once at a time, it messes everything up and moves way more than needed.

Two right DPad inputs.

What could be causing this? Is it Steam Input? a Windows setting? Maybe the way Minecraft handles mouse inputs?