@substring I am playing on a Full HDTV 40" via normal HDMI and some games in FBA and in SNES lengthen the screen to fill it completely, stretching the image in the process.For example when playing Progear in FBA the resolution goes to the maximum of the screen And that obviously looks horrible or at least for my tastes is not ideal.Thus I thought that perhaps changing the configuration of recalbox.config for each emulator could get the ideal results for the aspect ratio 4/3 that I am looking for That was what I looked for and I found several posts about it here and I would like to apply the configurations I saw in this post https://forum.recalbox.com/topic/3494/overlays/37 @ironic user posted the best ways to climb The different consoles to make the ideal Upscale.But I do not have any ideas as to how these settings should be placed so that it shows like the images of that Post.