If I set my scaling to 150% on Windows then SDL thinks my monitor is 1440p, similar to this issue. That lead me to https://github.com/libsdl-org/SDL/issues/2119 where it looks like High-DPI can be enabled with the SDL_WINDOW_ALLOW_HIGHDPI flag or with some additions to the manifest.
If I set my scaling to 150% on Windows then SDL thinks my monitor is 1440p, similar to this issue. That lead me to https://github.com/libsdl-org/SDL/issues/2119 where it looks like High-DPI can be enabled with the
SDL_WINDOW_ALLOW_HIGHDPI
flag or with some additions to the manifest.