2D Object gets blurry when moving

Hey!

I am working on a 2D game, and I have a strange problem.

While the game is paused, everything is crystal clear, but once the character starts to move, it becomes blurry.

The source image is a .png file, the export setting is set to GUI, Trilinear filter, truecolor format. For material, I use unlit/transparent (tried others as well).

I move the gameobject with
thisTransform.position += Vector3.up * 150 * Time.deltaTime;

The character is not animated, and nothing else is on the screen.

Any ideas what can cause the blurring effect?

Graphics will blur if you put them at partial pixel positions. Multiplying a position by deltaTime will likely do that - you could try

thisTransform.position += Vector3.up * Mathf.RoundToInt(150*Time.deltaTime);