How can I get full-resolution screenshots when the Simulator's “Pixel Accurate” option is disabled?

Question

On Xcode 9.1 the Pixel Accurate option is disabled and grayed out under the Window menu.

How can I take App Store screenshots without this

Answer 1

In case this helps anyone else, the issue for me was my second monitor. I tried all of the solutions here, but none of them worked until i unplugged my second display. I work on a 15" 2016 MBP and the second display is a 2560×1440 QHD Asus monitor connected by HDMI to a USB-C hub.