poliakov I dont want to get ahead of myself, but I must say you might be onto something with the switchresx and the fact that it has to be exactly half of native resolution (and set to the non HDPI option in that resolution).
I will test this with the most difficult task for my eyes on new tech - writing and reading, and report here if that is successful. The enlarged and visible pixels definately help with eye fixation.
If its annoying and uncomfortable but doesnt trigger a bad headache like the normal resolution, then this is a definite breakthrough.