When releasing two buttons in the new Input System it detects the differences

Question

I've been creating a game that uses the input system for moving the player

_playerInput.actions["Move"].performed += x =>
    {
        // We're moving
        _walking = true;
        // Set the movement input to the value passed by the player
        _movementInput = x.ReadValue<Vector2>();
        // The angle that we need the player to rotate towards so the player look where he's moving and we change it to be in degree
        _targetAngle = Mathf.Atan2(_movementInput.x, _movementInput.y) * Mathf.Rad2Deg + cam.eulerAngles.y;
    };

Here is my code but when I use the Arrows to move like the right and up Arrow and I want to release them it detects the smallest difference between the release of the two buttons which is near impossible to avoid (difference between release) before releasing "_movementInput" contains (0.71, 0.71) but after release it becomes (0, 1) or (1, 0). I want it to stay (0.71, 0.71) as it was before releasing the two buttons