Main Question: How to add 1024 x 640 HiDPI resolution on MacBook Air HighSierra internal display?
I'm trying to decrease resolution on my MacBook Air (13-inch, Mid 2011, non-retina) Default resolution (1440x900) is clear and sharp but it makes fonts inside programs like Xcode and others too small, making it nearly impossible to read. So naturally, I wanted to increase the resolution as I did on windows (and older versions of MacOS). But in High Sierra, adjusting to other resolutions makes everything blurry.
I've downloaded RDM, a free tool that lets you set many resolutions (as opposed to the limited native Display Settings). The ones marked HiDPI in RDM all look crisp and perfect. The downside is, it doesn't have the resolution I'm looking for which is about: 1024 x 640 HiDPI. There is regular 1024 x 640 and it looks great size-wise but it's blurry. From HiDPI there are: 1280x800 (too small) and the next up is 960x600 (too big).
Other things I've tried:
- SwitchResX - just couldn't figure out how to add HiDPI resolution, only created regular ones (which are all blurry)
- Tried this web based generator, but also only was able to create non-HiDPI resolutions: https://comsysto.github.io/Display-Override-PropertyList-File-Parser-and-Generator-with-HiDPI-Support-For-Scaled-Resolutions/
- Spent several days reading about this but seems I'm missing a piece of the puzzle