I have a interesting problem:

I have an 19" 5:4 screen with native resolution of 1280*1024.
However, I need to run the screen on 1024*768 to be able to use 70hz ( which is native refreshrate of dos games. )
BUT! Running a 4:3 resolution on a 5:4 screen, results in a bit of a stretch in the picture.

How can I make my screen to NOT stretch the 4:3 resolution to the 5:4 format of the screen?
It seems like it is something inbuilt in windows and cannot be turned off. Therefore I'm asking to see if there is anything I can do in DosBox to correct the aspect ratio ( in addition to the "aspect = true" setting ).

I want my games to play as native as possible 😀