I have a problem with the "1920x1080" 4:3 stretched in R6 aswell. I just don't know what real resolution R6 scales to or if it is some sort of custom stretched 16:9. Even if the other game uses Vdeg aswell, the conversions always feel wrong. Could be completely subjective but It doesn't seem to work.
DPI Wizard is there a way to find out the real resolution R6 is using when in-game the settings are "1920x1080" with an Aspect Ratio of 4:3
I used the method you just described here and first I thought it was working but I think it isn't.... something is off. Please help!