Play not using entire viewport

Whenever I hit play in editor my game only renders into 1/4 of window like so:

It’s not rendering full scene to 1/4 of viewport, you can see part of my crosshairs in middle of full window. I get same results if I start a new project so it doesn’t seem to be anything related to a specific project. Any ideas how to fix this?

Hi FragHatter,

This has been reported here:

There are some workarounds listed in that post which should help get you going again. If you could also provide any details you have so we can try to reproduce this bug, including your dxdiag, please add to that post. Thanks!