Game view scale#

The scale slider at the top of the Game view represents the Game view scaling relative to the selected aspect or resolution chosen in the same toolbar.

1x does not represent filling the Game view, the value at the left-hand side of the slider fills the Game view.

Game view zoom slider

The Game view is displayed at 70% of the rendered 1920x1080 resolution

If you can't change the scale to 1x, make sure low resolution aspect ratios is unchecked in the resolution/aspect ratio dropdown.