I don't know what you're really trying to achieve here, since the events look like you're trying to permanently move Sprite2 to the right, but for some reason it tries to ignore input while it's moving, which I don't think actually makes any difference in this case (while it's moving to a tile, input isn't used anyway, it's just waiting for the object to move in to the next tile).
Since your events stop ignoring movement and then immediately starts moving it again the next tick, you have a one-tick duration before movement restarts, which is framerate dependent.