It's working okay now all things considered. I'm surprised at how well the scaling works as on the raspbian + retropie the text is harder to see and the borders are a bit off even in the terminal. I should try to copy retropie's font to my other sd cards with raspbian + retropie on them to make the console more visible

Glad you got it sorted out, actually RetroPie is using Raspbian (RPI OS) Lite underneath, so there's no specific font that's included in RetroPie.

Maybe the borders' position have something to do with the Overscan settings for the display ? Or you may try to increase the font size from the Setup script, as explained here ?

@Kvitekvist if your display supports lower resolutions change the window size in the gles2n64.conf file to 640x480. Then when you launch a game, enter the runcommand menu before the game boots and change the default video mode for gles2n64 to 640x480.

Well I feel like a right wally. I applied your code above and it works! However, I must have been mistaken as Yoshi runs awfully with gles2n64 as the emu. I imagine this is why the author blacklisted it. Most of the screen is black, and when you can see elements you only get bits here and there.

God only knows what I was thinking. Apologies to Mitu for taking up your valuable time with this. :-(

Yes, I believe I did the same thing with the configs text, sorry I’m pretty new to all this. Just trying to shed some light on something I was reading about the last few days.

edited /opt/retropie/configs/n64/mupen64plus.cfg
Like this:
#Path to directory where emulator save states (snapshots) are saved. If this is blank, the default #value of ${UserConfigPath}/save will be used
SaveStatePath = "/home/pi/RetroPie/roms/n64"
#Path to directory where SRAM/EEPROM data (in-game saves) are stored. If this is blank, the default #value of ${UserConfigPath}/save will be used
SaveSRAMPath = "/home/pi/RetroPie/roms/n64"

@mitu

i've tried that already with no luck
the resolution within the black bar will change, but it wont show the full screen

the smaller Res i go, the more the image gets cut out within the black bars (kind of like enlarging an image, or zooming in with your phone by using two fingers)
and the highest Res it will go (1920x1080 at 60hz) will not display the entire image