When I change DST to a lower resolution in fullscreen (1440x900 in the screenshot), my screen's resolution changes to the one I picked, but DST will be small. DST will not scale in windowed mode. DST runs at a low framerate in 2650x1600, so I don't want to use that resolution. The only way to fix this right now is to change my screen resolution in my settings, sign out, log back in, and then play DST.
Steps to Reproduce
Use a HiDPI screen (mine is 2650x1600), change DST to a lower resolution in fullscreen
This issue has not been confirmed by a developer yet.